/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:50:24,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:50:24,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:50:24,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:50:24,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:50:24,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:50:24,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:50:24,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:50:24,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:50:24,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:50:24,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:50:24,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:50:24,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:50:24,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:50:24,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:50:24,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:50:24,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:50:24,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:50:24,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:50:24,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:50:24,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:50:24,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:50:24,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:50:24,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:50:24,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:50:24,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:50:24,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:50:24,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:50:24,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:50:24,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:50:24,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:50:24,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:50:24,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:50:24,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:50:24,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:50:24,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:50:24,699 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:50:24,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:50:24,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:50:24,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:50:24,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:50:24,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:50:24,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:50:24,700 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:50:24,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:50:25,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:50:25,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:50:25,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:50:25,206 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:50:25,209 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:50:25,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2021-02-22 01:50:25,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8923ab51f/010048484d774bc6a5e855ca25fb2bc1/FLAGec67c5f9b [2021-02-22 01:50:26,010 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:50:26,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2021-02-22 01:50:26,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8923ab51f/010048484d774bc6a5e855ca25fb2bc1/FLAGec67c5f9b [2021-02-22 01:50:26,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8923ab51f/010048484d774bc6a5e855ca25fb2bc1 [2021-02-22 01:50:26,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:50:26,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:50:26,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:50:26,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:50:26,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:50:26,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:50:26" (1/1) ... [2021-02-22 01:50:26,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c60ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26, skipping insertion in model container [2021-02-22 01:50:26,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:50:26" (1/1) ... [2021-02-22 01:50:26,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:50:26,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:50:26,614 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_15x0-1.c[481,494] [2021-02-22 01:50:26,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:50:26,628 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:50:26,644 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_15x0-1.c[481,494] [2021-02-22 01:50:26,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:50:26,660 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:50:26,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26 WrapperNode [2021-02-22 01:50:26,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:50:26,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:50:26,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:50:26,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:50:26,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26" (1/1) ... [2021-02-22 01:50:26,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26" (1/1) ... [2021-02-22 01:50:26,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26" (1/1) ... [2021-02-22 01:50:26,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26" (1/1) ... [2021-02-22 01:50:26,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26" (1/1) ... [2021-02-22 01:50:26,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26" (1/1) ... [2021-02-22 01:50:26,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26" (1/1) ... [2021-02-22 01:50:26,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:50:26,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:50:26,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:50:26,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:50:26,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26" (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 [2021-02-22 01:50:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:50:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:50:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:50:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-02-22 01:50:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:50:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:50:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:50:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:50:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:50:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-02-22 01:50:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:50:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:50:26,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:50:26,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:50:26,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:50:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:50:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:50:27,055 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:50:27,055 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:50:27,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:50:27 BoogieIcfgContainer [2021-02-22 01:50:27,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:50:27,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:50:27,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:50:27,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:50:27,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:50:26" (1/3) ... [2021-02-22 01:50:27,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323cb4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:50:27, skipping insertion in model container [2021-02-22 01:50:27,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:50:26" (2/3) ... [2021-02-22 01:50:27,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323cb4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:50:27, skipping insertion in model container [2021-02-22 01:50:27,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:50:27" (3/3) ... [2021-02-22 01:50:27,067 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2021-02-22 01:50:27,074 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:50:27,079 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:50:27,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:50:27,142 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:50:27,143 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:50:27,143 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:50:27,143 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:50:27,143 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:50:27,143 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:50:27,144 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:50:27,144 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:50:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-02-22 01:50:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-22 01:50:27,187 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:27,188 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] [2021-02-22 01:50:27,189 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:27,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:27,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133070, now seen corresponding path program 1 times [2021-02-22 01:50:27,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:27,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037506678] [2021-02-22 01:50:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:27,373 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:27,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:27,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:27,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:27,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:27,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:27,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:27,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:27,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:27,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:27,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:27,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:27,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:27,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:27,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:27,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:50:27,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037506678] [2021-02-22 01:50:27,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:27,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:50:27,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304494642] [2021-02-22 01:50:27,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:50:27,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:27,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:50:27,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:50:27,879 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2021-02-22 01:50:28,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:28,141 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-02-22 01:50:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:50:28,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-22 01:50:28,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:28,156 INFO L225 Difference]: With dead ends: 48 [2021-02-22 01:50:28,156 INFO L226 Difference]: Without dead ends: 33 [2021-02-22 01:50:28,161 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 [2021-02-22 01:50:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-22 01:50:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-22 01:50:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-22 01:50:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-02-22 01:50:28,226 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2021-02-22 01:50:28,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:28,226 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-02-22 01:50:28,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:50:28,227 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-02-22 01:50:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-22 01:50:28,229 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:28,229 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] [2021-02-22 01:50:28,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:50:28,230 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:28,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:28,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1822905144, now seen corresponding path program 1 times [2021-02-22 01:50:28,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:28,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659668278] [2021-02-22 01:50:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:28,235 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:28,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:28,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:28,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:28,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:28,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:28,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:28,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:28,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:28,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:28,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:28,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:28,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-22 01:50:28,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659668278] [2021-02-22 01:50:28,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:28,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:50:28,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912126211] [2021-02-22 01:50:28,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:50:28,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:28,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:50:28,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:50:28,453 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2021-02-22 01:50:28,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:28,841 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-02-22 01:50:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 01:50:28,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2021-02-22 01:50:28,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:28,855 INFO L225 Difference]: With dead ends: 44 [2021-02-22 01:50:28,855 INFO L226 Difference]: Without dead ends: 38 [2021-02-22 01:50:28,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-22 01:50:28,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-22 01:50:28,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-22 01:50:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-22 01:50:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-22 01:50:28,893 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 35 [2021-02-22 01:50:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:28,895 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-22 01:50:28,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:50:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-22 01:50:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-22 01:50:28,899 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:28,900 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] [2021-02-22 01:50:28,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:50:28,900 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:28,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:28,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1004193542, now seen corresponding path program 2 times [2021-02-22 01:50:28,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:28,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997150489] [2021-02-22 01:50:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:28,910 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:28,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:28,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:28,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:29,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:29,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:29,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:29,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:29,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:29,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:29,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-22 01:50:29,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997150489] [2021-02-22 01:50:29,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:29,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:50:29,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113564274] [2021-02-22 01:50:29,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:50:29,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:29,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:50:29,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:50:29,144 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2021-02-22 01:50:29,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:29,431 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-02-22 01:50:29,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:50:29,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2021-02-22 01:50:29,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:29,433 INFO L225 Difference]: With dead ends: 49 [2021-02-22 01:50:29,433 INFO L226 Difference]: Without dead ends: 43 [2021-02-22 01:50:29,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:50:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-02-22 01:50:29,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-02-22 01:50:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-22 01:50:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-02-22 01:50:29,463 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 44 [2021-02-22 01:50:29,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:29,464 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-02-22 01:50:29,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:50:29,464 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-02-22 01:50:29,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-22 01:50:29,466 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:29,466 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] [2021-02-22 01:50:29,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:50:29,467 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:29,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:29,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1655724848, now seen corresponding path program 3 times [2021-02-22 01:50:29,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:29,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876700721] [2021-02-22 01:50:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:29,470 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:29,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:29,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:29,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:29,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:29,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:29,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:29,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:29,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:29,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:29,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-22 01:50:29,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876700721] [2021-02-22 01:50:29,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:29,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:50:29,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990935829] [2021-02-22 01:50:29,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:50:29,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:29,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:50:29,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:50:29,698 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 10 states. [2021-02-22 01:50:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:30,012 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-02-22 01:50:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:50:30,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2021-02-22 01:50:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:30,014 INFO L225 Difference]: With dead ends: 54 [2021-02-22 01:50:30,014 INFO L226 Difference]: Without dead ends: 48 [2021-02-22 01:50:30,015 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 [2021-02-22 01:50:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-22 01:50:30,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-02-22 01:50:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-22 01:50:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-02-22 01:50:30,029 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 53 [2021-02-22 01:50:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:30,030 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-02-22 01:50:30,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:50:30,030 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-02-22 01:50:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-22 01:50:30,031 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:30,032 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] [2021-02-22 01:50:30,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:50:30,032 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:30,033 INFO L82 PathProgramCache]: Analyzing trace with hash 54098690, now seen corresponding path program 4 times [2021-02-22 01:50:30,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:30,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277642178] [2021-02-22 01:50:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:30,036 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:30,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:30,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:30,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:30,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-02-22 01:50:30,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277642178] [2021-02-22 01:50:30,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:30,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 01:50:30,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465585183] [2021-02-22 01:50:30,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 01:50:30,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:30,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 01:50:30,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:50:30,312 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 11 states. [2021-02-22 01:50:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:30,706 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-02-22 01:50:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:50:30,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2021-02-22 01:50:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:30,708 INFO L225 Difference]: With dead ends: 59 [2021-02-22 01:50:30,708 INFO L226 Difference]: Without dead ends: 53 [2021-02-22 01:50:30,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:50:30,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-22 01:50:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-02-22 01:50:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-22 01:50:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-02-22 01:50:30,722 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 62 [2021-02-22 01:50:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:30,723 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-02-22 01:50:30,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 01:50:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-02-22 01:50:30,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-22 01:50:30,724 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:30,725 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] [2021-02-22 01:50:30,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:50:30,725 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:30,726 INFO L82 PathProgramCache]: Analyzing trace with hash -406982872, now seen corresponding path program 5 times [2021-02-22 01:50:30,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:30,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557500791] [2021-02-22 01:50:30,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:30,728 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:30,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:30,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:30,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:30,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:30,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:30,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:31,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-02-22 01:50:31,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557500791] [2021-02-22 01:50:31,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:31,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-22 01:50:31,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369818281] [2021-02-22 01:50:31,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-22 01:50:31,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:31,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-22 01:50:31,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-02-22 01:50:31,072 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 12 states. [2021-02-22 01:50:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:31,546 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2021-02-22 01:50:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:50:31,547 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2021-02-22 01:50:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:31,548 INFO L225 Difference]: With dead ends: 64 [2021-02-22 01:50:31,549 INFO L226 Difference]: Without dead ends: 58 [2021-02-22 01:50:31,550 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 [2021-02-22 01:50:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-22 01:50:31,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-22 01:50:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-22 01:50:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-02-22 01:50:31,565 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 71 [2021-02-22 01:50:31,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:31,566 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-02-22 01:50:31,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-22 01:50:31,566 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-02-22 01:50:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-22 01:50:31,568 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:31,568 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] [2021-02-22 01:50:31,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:50:31,568 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:31,569 INFO L82 PathProgramCache]: Analyzing trace with hash 507179274, now seen corresponding path program 6 times [2021-02-22 01:50:31,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:31,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985880974] [2021-02-22 01:50:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:31,572 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:31,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:31,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:31,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:31,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:31,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-02-22 01:50:31,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985880974] [2021-02-22 01:50:31,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:31,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-22 01:50:31,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848523845] [2021-02-22 01:50:31,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-22 01:50:31,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:31,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-22 01:50:31,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-02-22 01:50:31,881 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 13 states. [2021-02-22 01:50:32,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:32,333 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2021-02-22 01:50:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:50:32,333 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-22 01:50:32,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:32,335 INFO L225 Difference]: With dead ends: 69 [2021-02-22 01:50:32,335 INFO L226 Difference]: Without dead ends: 63 [2021-02-22 01:50:32,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2021-02-22 01:50:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-22 01:50:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-02-22 01:50:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-22 01:50:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-02-22 01:50:32,350 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2021-02-22 01:50:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:32,351 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-02-22 01:50:32,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-22 01:50:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-02-22 01:50:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-22 01:50:32,352 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:32,352 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] [2021-02-22 01:50:32,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 01:50:32,353 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:32,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:32,353 INFO L82 PathProgramCache]: Analyzing trace with hash -326332640, now seen corresponding path program 7 times [2021-02-22 01:50:32,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:32,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172889517] [2021-02-22 01:50:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:32,356 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:32,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:32,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:32,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:32,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:32,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:32,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:32,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:32,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:32,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:32,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:32,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:32,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:32,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:32,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-02-22 01:50:32,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172889517] [2021-02-22 01:50:32,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:32,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 01:50:32,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423267489] [2021-02-22 01:50:32,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 01:50:32,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:32,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 01:50:32,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:50:32,688 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 14 states. [2021-02-22 01:50:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:33,299 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2021-02-22 01:50:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-22 01:50:33,300 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2021-02-22 01:50:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:33,302 INFO L225 Difference]: With dead ends: 74 [2021-02-22 01:50:33,302 INFO L226 Difference]: Without dead ends: 68 [2021-02-22 01:50:33,303 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 [2021-02-22 01:50:33,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-22 01:50:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-02-22 01:50:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-22 01:50:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-02-22 01:50:33,319 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 89 [2021-02-22 01:50:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:33,320 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-02-22 01:50:33,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 01:50:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-02-22 01:50:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-22 01:50:33,321 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:33,321 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] [2021-02-22 01:50:33,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 01:50:33,322 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:33,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1949113106, now seen corresponding path program 8 times [2021-02-22 01:50:33,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:33,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956367417] [2021-02-22 01:50:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:33,325 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:33,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:33,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:33,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:33,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:33,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:33,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-02-22 01:50:33,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956367417] [2021-02-22 01:50:33,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:33,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-22 01:50:33,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125843432] [2021-02-22 01:50:33,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-22 01:50:33,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:33,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-22 01:50:33,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:50:33,778 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 15 states. [2021-02-22 01:50:34,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:34,433 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2021-02-22 01:50:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:50:34,434 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2021-02-22 01:50:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:34,436 INFO L225 Difference]: With dead ends: 79 [2021-02-22 01:50:34,436 INFO L226 Difference]: Without dead ends: 73 [2021-02-22 01:50:34,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2021-02-22 01:50:34,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-22 01:50:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-22 01:50:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-22 01:50:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-02-22 01:50:34,456 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 98 [2021-02-22 01:50:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:34,457 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-02-22 01:50:34,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-22 01:50:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-02-22 01:50:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-02-22 01:50:34,459 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:34,459 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] [2021-02-22 01:50:34,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 01:50:34,460 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:34,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:34,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1213774616, now seen corresponding path program 9 times [2021-02-22 01:50:34,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:34,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388428052] [2021-02-22 01:50:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:34,463 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:34,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:34,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:34,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:34,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:34,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-02-22 01:50:34,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388428052] [2021-02-22 01:50:34,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:34,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-22 01:50:34,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182567952] [2021-02-22 01:50:34,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-22 01:50:34,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:34,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-22 01:50:34,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:50:34,934 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 16 states. [2021-02-22 01:50:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:35,578 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-02-22 01:50:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 01:50:35,578 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 107 [2021-02-22 01:50:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:35,581 INFO L225 Difference]: With dead ends: 84 [2021-02-22 01:50:35,581 INFO L226 Difference]: Without dead ends: 78 [2021-02-22 01:50:35,583 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 [2021-02-22 01:50:35,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-22 01:50:35,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-22 01:50:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-22 01:50:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2021-02-22 01:50:35,612 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 107 [2021-02-22 01:50:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:35,612 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2021-02-22 01:50:35,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-22 01:50:35,613 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2021-02-22 01:50:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-02-22 01:50:35,615 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:35,615 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] [2021-02-22 01:50:35,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 01:50:35,615 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:35,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:35,616 INFO L82 PathProgramCache]: Analyzing trace with hash -241993446, now seen corresponding path program 10 times [2021-02-22 01:50:35,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:35,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546384452] [2021-02-22 01:50:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:35,620 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:35,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:35,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:35,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:35,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:35,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:35,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:35,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:35,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:35,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:35,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:35,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:35,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:35,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:35,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:35,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:36,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:36,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:36,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:36,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-02-22 01:50:36,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546384452] [2021-02-22 01:50:36,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:36,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-22 01:50:36,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743850947] [2021-02-22 01:50:36,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-22 01:50:36,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:36,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-22 01:50:36,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:50:36,168 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 17 states. [2021-02-22 01:50:36,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:36,829 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2021-02-22 01:50:36,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-22 01:50:36,830 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 116 [2021-02-22 01:50:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:36,831 INFO L225 Difference]: With dead ends: 89 [2021-02-22 01:50:36,831 INFO L226 Difference]: Without dead ends: 83 [2021-02-22 01:50:36,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=283, Invalid=587, Unknown=0, NotChecked=0, Total=870 [2021-02-22 01:50:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-22 01:50:36,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-02-22 01:50:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-22 01:50:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2021-02-22 01:50:36,847 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 116 [2021-02-22 01:50:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:36,848 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2021-02-22 01:50:36,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-22 01:50:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2021-02-22 01:50:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-22 01:50:36,850 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:36,850 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:50:36,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-22 01:50:36,850 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:36,851 INFO L82 PathProgramCache]: Analyzing trace with hash -790695152, now seen corresponding path program 11 times [2021-02-22 01:50:36,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:36,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308392618] [2021-02-22 01:50:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:36,853 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:36,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:36,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:36,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:36,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:36,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:36,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:36,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:36,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:36,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:37,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:37,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:37,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:37,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:37,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:37,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:37,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:37,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:37,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:37,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:37,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:37,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-02-22 01:50:37,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308392618] [2021-02-22 01:50:37,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:37,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-22 01:50:37,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185099469] [2021-02-22 01:50:37,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-22 01:50:37,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:37,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-22 01:50:37,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2021-02-22 01:50:37,379 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 18 states. [2021-02-22 01:50:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:38,063 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-02-22 01:50:38,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-22 01:50:38,064 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 125 [2021-02-22 01:50:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:38,065 INFO L225 Difference]: With dead ends: 94 [2021-02-22 01:50:38,065 INFO L226 Difference]: Without dead ends: 88 [2021-02-22 01:50:38,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=667, Unknown=0, NotChecked=0, Total=992 [2021-02-22 01:50:38,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-02-22 01:50:38,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-02-22 01:50:38,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-02-22 01:50:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2021-02-22 01:50:38,082 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 125 [2021-02-22 01:50:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:38,082 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2021-02-22 01:50:38,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-22 01:50:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2021-02-22 01:50:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-02-22 01:50:38,084 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:38,084 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:50:38,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-22 01:50:38,084 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:38,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:38,085 INFO L82 PathProgramCache]: Analyzing trace with hash -126776542, now seen corresponding path program 12 times [2021-02-22 01:50:38,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:38,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484321232] [2021-02-22 01:50:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:38,087 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:38,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:38,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:38,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:38,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:38,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:38,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-02-22 01:50:38,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484321232] [2021-02-22 01:50:38,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:38,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-22 01:50:38,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108179064] [2021-02-22 01:50:38,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-22 01:50:38,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:38,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-22 01:50:38,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2021-02-22 01:50:38,637 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 19 states. [2021-02-22 01:50:39,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:39,346 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2021-02-22 01:50:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-22 01:50:39,347 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 134 [2021-02-22 01:50:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:39,350 INFO L225 Difference]: With dead ends: 99 [2021-02-22 01:50:39,351 INFO L226 Difference]: Without dead ends: 93 [2021-02-22 01:50:39,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=370, Invalid=752, Unknown=0, NotChecked=0, Total=1122 [2021-02-22 01:50:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-22 01:50:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-02-22 01:50:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-02-22 01:50:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2021-02-22 01:50:39,372 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 134 [2021-02-22 01:50:39,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:39,373 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2021-02-22 01:50:39,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-22 01:50:39,373 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2021-02-22 01:50:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-02-22 01:50:39,375 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:39,375 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:50:39,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-22 01:50:39,375 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:39,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1918613256, now seen corresponding path program 13 times [2021-02-22 01:50:39,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:39,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531644177] [2021-02-22 01:50:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:39,379 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:39,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:39,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:39,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:39,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:39,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:39,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:39,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-02-22 01:50:40,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531644177] [2021-02-22 01:50:40,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:40,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-22 01:50:40,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838502594] [2021-02-22 01:50:40,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-22 01:50:40,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:40,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-22 01:50:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-02-22 01:50:40,151 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 20 states. [2021-02-22 01:50:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:41,015 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2021-02-22 01:50:41,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 01:50:41,015 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 143 [2021-02-22 01:50:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:41,017 INFO L225 Difference]: With dead ends: 104 [2021-02-22 01:50:41,017 INFO L226 Difference]: Without dead ends: 98 [2021-02-22 01:50:41,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=842, Unknown=0, NotChecked=0, Total=1260 [2021-02-22 01:50:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-02-22 01:50:41,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-02-22 01:50:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-02-22 01:50:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-02-22 01:50:41,032 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 143 [2021-02-22 01:50:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:41,032 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-02-22 01:50:41,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-22 01:50:41,032 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-02-22 01:50:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-02-22 01:50:41,034 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:41,034 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:50:41,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-22 01:50:41,035 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:41,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:41,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1212862762, now seen corresponding path program 14 times [2021-02-22 01:50:41,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:41,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600773148] [2021-02-22 01:50:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:41,038 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:41,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:41,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:41,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:41,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:41,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:41,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-02-22 01:50:41,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600773148] [2021-02-22 01:50:41,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:41,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-22 01:50:41,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925203990] [2021-02-22 01:50:41,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-22 01:50:41,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:41,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-22 01:50:41,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2021-02-22 01:50:41,773 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 21 states. [2021-02-22 01:50:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:42,638 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2021-02-22 01:50:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-22 01:50:42,639 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 152 [2021-02-22 01:50:42,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:42,641 INFO L225 Difference]: With dead ends: 109 [2021-02-22 01:50:42,641 INFO L226 Difference]: Without dead ends: 103 [2021-02-22 01:50:42,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=469, Invalid=937, Unknown=0, NotChecked=0, Total=1406 [2021-02-22 01:50:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-02-22 01:50:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-02-22 01:50:42,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-02-22 01:50:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2021-02-22 01:50:42,668 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 152 [2021-02-22 01:50:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:42,670 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2021-02-22 01:50:42,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-22 01:50:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2021-02-22 01:50:42,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-22 01:50:42,673 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:50:42,673 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:50:42,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-22 01:50:42,674 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:50:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:50:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1200326400, now seen corresponding path program 15 times [2021-02-22 01:50:42,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:50:42,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421757374] [2021-02-22 01:50:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:50:42,679 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:50:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:42,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:42,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:42,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:42,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:42,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:42,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:42,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:42,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 01:50:42,845 WARN L141 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-02-22 01:50:42,849 WARN L147 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size 23 [2021-02-22 01:50:42,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:42,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:50:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:42,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:42,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:50:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:50:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:42,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:42,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:42,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:42,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:42,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:42,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:43,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:43,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:43,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:43,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:43,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:43,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:43,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:43,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:43,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:43,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:43,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:43,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:43,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:43,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:43,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:43,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:43,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:43,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:43,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:43,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:43,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:43,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:43,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:43,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:43,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:43,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:43,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:43,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:43,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:43,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:43,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:43,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:44,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:44,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:44,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:44,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:44,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:44,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:44,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:44,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:44,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:44,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:44,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:44,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:44,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:44,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:44,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:44,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:44,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 01:50:44,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:44,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:50:44,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:50:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:50:44,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:50:44,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:50:44,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 01:50:44,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:50:44,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:50:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2021-02-22 01:50:44,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421757374] [2021-02-22 01:50:44,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:50:44,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-02-22 01:50:44,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525710579] [2021-02-22 01:50:44,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-02-22 01:50:44,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:50:44,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-02-22 01:50:44,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1425, Unknown=0, NotChecked=0, Total=1722 [2021-02-22 01:50:44,752 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 42 states. [2021-02-22 01:50:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:50:51,715 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2021-02-22 01:50:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-02-22 01:50:51,715 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 161 [2021-02-22 01:50:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:50:51,716 INFO L225 Difference]: With dead ends: 103 [2021-02-22 01:50:51,716 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:50:51,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1810, Invalid=7502, Unknown=0, NotChecked=0, Total=9312 [2021-02-22 01:50:51,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:50:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:50:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:50:51,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:50:51,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2021-02-22 01:50:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:50:51,721 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:50:51,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2021-02-22 01:50:51,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:50:51,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:50:51,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-22 01:50:51,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:50:53,384 WARN L202 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 138 DAG size of output: 104 [2021-02-22 01:50:54,231 WARN L202 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-02-22 01:50:55,078 WARN L202 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-02-22 01:50:55,972 WARN L202 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 87 [2021-02-22 01:50:56,815 WARN L202 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 87 [2021-02-22 01:50:56,965 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 01:50:56,966 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 01:50:56,966 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 01:50:56,966 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 01:50:56,966 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 01:50:56,966 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:50:56,966 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 01:50:56,966 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:50:56,967 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-22 01:50:56,967 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|)) [2021-02-22 01:50:56,967 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 01:50:56,967 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 01:50:56,967 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:50:56,967 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:50:56,967 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:50:56,967 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:50:56,967 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 01:50:56,968 INFO L185 CegarLoopUtils]: At program point sumEXIT(lines 5 11) the Hoare annotation is: (let ((.cse3 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#res| .cse3))) (or (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 6)) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 9) |sum_#res|) (<= |sum_#in~n| 9)) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 10)) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#res|) .cse1 (<= |sum_#in~n| 1) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 3) .cse2 (<= (+ |sum_#in~m| 3) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 2) |sum_#res|) (<= |sum_#in~n| 2) .cse1 .cse2) (and .cse0 (<= |sum_#in~n| 4) .cse1 .cse2 (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= .cse3 |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#res|) .cse1 (<= |sum_#in~n| 14) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 8) .cse2 (<= (+ |sum_#in~m| 8) |sum_#res|)) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#res|)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7) .cse2) (and .cse0 (<= (+ |sum_#in~m| 11) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 11)) (and .cse0 .cse1 (<= |sum_#in~n| 13) .cse2 (<= (+ |sum_#in~m| 13) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 5) .cse1 .cse2 (<= (+ |sum_#in~m| 5) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 15) |sum_#res|) .cse1 .cse2)))) [2021-02-22 01:50:56,968 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|)) [2021-02-22 01:50:56,968 INFO L185 CegarLoopUtils]: At program point L9-1(line 9) the Hoare annotation is: (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#t~ret7| (+ |sum_#in~n| |sum_#in~m|)))) (or (and .cse0 .cse1 (<= |sum_#in~n| 6) (<= (+ |sum_#in~m| 6) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 7) (<= (+ |sum_#in~m| 7) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) .cse2) (and .cse0 (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#t~ret7|)) (and .cse0 (<= (+ |sum_#in~m| 3) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 3) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 11) .cse2 (<= (+ |sum_#in~m| 11) |sum_#t~ret7|)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 10) |sum_#t~ret7|) .cse2 (<= |sum_#in~n| 10)) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 15) |sum_#t~ret7|)) (and .cse0 (<= (+ |sum_#in~m| 4) |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse1 .cse2) (and .cse0 (<= |sum_#in~n| 5) .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 9) |sum_#t~ret7|) (<= |sum_#in~n| 9) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 13) |sum_#t~ret7|) (<= |sum_#in~n| 13) .cse2) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 14) .cse2))) [2021-02-22 01:50:56,969 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)) [2021-02-22 01:50:56,969 INFO L185 CegarLoopUtils]: At program point L9-2(line 9) the Hoare annotation is: (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#t~ret7| (+ |sum_#in~n| |sum_#in~m|)))) (or (and .cse0 .cse1 (<= |sum_#in~n| 6) (<= (+ |sum_#in~m| 6) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 7) (<= (+ |sum_#in~m| 7) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) .cse2) (and .cse0 (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#t~ret7|)) (and .cse0 (<= (+ |sum_#in~m| 3) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 3) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 11) .cse2 (<= (+ |sum_#in~m| 11) |sum_#t~ret7|)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 10) |sum_#t~ret7|) .cse2 (<= |sum_#in~n| 10)) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 15) |sum_#t~ret7|)) (and .cse0 (<= (+ |sum_#in~m| 4) |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse1 .cse2) (and .cse0 (<= |sum_#in~n| 5) .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 9) |sum_#t~ret7|) (<= |sum_#in~n| 9) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 13) |sum_#t~ret7|) (<= |sum_#in~n| 13) .cse2) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 14) .cse2))) [2021-02-22 01:50:56,969 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|)) [2021-02-22 01:50:56,969 INFO L185 CegarLoopUtils]: At program point L9-3(line 9) the Hoare annotation is: (and (let ((.cse17 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~m |sum_#in~m|)) (.cse1 (<= |sum_#res| .cse17)) (.cse3 (<= |sum_#t~ret7| .cse17))) (or (let ((.cse2 (+ |sum_#in~m| 12))) (and .cse0 .cse1 (<= |sum_#in~n| 12) (<= .cse2 |sum_#t~ret7|) .cse3 (<= .cse2 |sum_#res|))) (let ((.cse4 (+ |sum_#in~m| 10))) (and (<= .cse4 |sum_#res|) .cse0 .cse1 (<= .cse4 |sum_#t~ret7|) .cse3 (<= |sum_#in~n| 10))) (let ((.cse5 (+ |sum_#in~m| 5))) (and (<= |sum_#in~n| 5) .cse0 .cse1 (<= .cse5 |sum_#t~ret7|) (<= .cse5 |sum_#res|) .cse3)) (let ((.cse6 (+ |sum_#in~m| 6))) (and (<= .cse6 |sum_#res|) .cse0 .cse1 (<= |sum_#in~n| 6) (<= .cse6 |sum_#t~ret7|) .cse3)) (let ((.cse7 (+ |sum_#in~m| 14))) (and (<= .cse7 |sum_#t~ret7|) (<= .cse7 |sum_#res|) .cse0 .cse1 .cse3)) (let ((.cse8 (+ |sum_#in~m| 13))) (and .cse0 (<= .cse8 |sum_#t~ret7|) (<= |sum_#in~n| 13) .cse1 (<= .cse8 |sum_#res|) .cse3)) (let ((.cse9 (+ |sum_#in~m| 11))) (and (<= .cse9 |sum_#res|) .cse0 .cse1 (<= |sum_#in~n| 11) .cse3 (<= .cse9 |sum_#t~ret7|))) (let ((.cse10 (+ |sum_#in~m| 3))) (and (<= .cse10 |sum_#t~ret7|) .cse0 (<= |sum_#in~n| 3) .cse1 (<= .cse10 |sum_#res|) .cse3)) (let ((.cse11 (+ |sum_#in~m| 9))) (and .cse0 .cse1 (<= .cse11 |sum_#res|) (<= .cse11 |sum_#t~ret7|) (<= |sum_#in~n| 9) .cse3)) (let ((.cse12 (+ |sum_#in~m| 8))) (and .cse0 (<= |sum_#in~n| 8) .cse1 (<= .cse12 |sum_#res|) (<= .cse12 |sum_#t~ret7|) .cse3)) (let ((.cse13 (+ |sum_#in~m| 7))) (and .cse0 (<= .cse13 |sum_#res|) (<= |sum_#in~n| 7) .cse1 (<= .cse13 |sum_#t~ret7|) .cse3)) (let ((.cse14 (+ |sum_#in~m| 4))) (and (<= .cse14 |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse0 .cse1 (<= .cse14 |sum_#res|) .cse3)) (let ((.cse15 (+ |sum_#in~m| 1))) (and (<= .cse15 |sum_#t~ret7|) (<= .cse15 |sum_#res|) .cse0 (<= |sum_#in~n| 1) .cse1 .cse3)) (let ((.cse16 (+ |sum_#in~m| 2))) (and (<= .cse16 |sum_#res|) (<= |sum_#in~n| 2) .cse0 .cse1 .cse3 (<= .cse16 |sum_#t~ret7|)))))) (let ((.cse18 (= sum_~n |sum_#in~n|))) (or (and .cse18 (<= |sum_#in~n| 14)) (let ((.cse19 (+ |sum_#in~m| 15))) (and .cse18 (<= .cse19 |sum_#res|) (<= .cse19 |sum_#t~ret7|)))))) [2021-02-22 01:50:56,970 INFO L185 CegarLoopUtils]: At program point L5(lines 5 11) the Hoare annotation is: (= sum_~n |sum_#in~n|) [2021-02-22 01:50:56,970 INFO L185 CegarLoopUtils]: At program point sumFINAL(lines 5 11) the Hoare annotation is: (let ((.cse3 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#res| .cse3))) (or (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 6)) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 9) |sum_#res|) (<= |sum_#in~n| 9)) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 10)) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#res|) .cse1 (<= |sum_#in~n| 1) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 3) .cse2 (<= (+ |sum_#in~m| 3) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 2) |sum_#res|) (<= |sum_#in~n| 2) .cse1 .cse2) (and .cse0 (<= |sum_#in~n| 4) .cse1 .cse2 (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= .cse3 |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#res|) .cse1 (<= |sum_#in~n| 14) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 8) .cse2 (<= (+ |sum_#in~m| 8) |sum_#res|)) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#res|)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7) .cse2) (and .cse0 (<= (+ |sum_#in~m| 11) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 11)) (and .cse0 .cse1 (<= |sum_#in~n| 13) .cse2 (<= (+ |sum_#in~m| 13) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 5) .cse1 .cse2 (<= (+ |sum_#in~m| 5) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 15) |sum_#res|) .cse1 .cse2)))) [2021-02-22 01:50:56,970 INFO L192 CegarLoopUtils]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2021-02-22 01:50:56,970 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) the Hoare annotation is: false [2021-02-22 01:50:56,970 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2021-02-22 01:50:56,971 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 13 20) the Hoare annotation is: (<= 15 main_~a~0) [2021-02-22 01:50:56,971 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: false [2021-02-22 01:50:56,971 INFO L185 CegarLoopUtils]: At program point L17(lines 17 19) the Hoare annotation is: (and (<= main_~a~0 main_~result~0) (<= 15 main_~a~0) (<= main_~result~0 main_~a~0) (= main_~b~0 0) (<= main_~a~0 15)) [2021-02-22 01:50:56,971 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: false [2021-02-22 01:50:56,971 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (and (<= 15 main_~a~0) (= main_~b~0 0) (<= main_~a~0 15)) [2021-02-22 01:50:56,971 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (<= 15 main_~a~0) (<= main_~a~0 15)) [2021-02-22 01:50:56,971 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (and (<= |main_#t~ret8| main_~a~0) (<= 15 main_~a~0) (<= main_~a~0 |main_#t~ret8|) (= main_~b~0 0) (<= main_~a~0 15)) [2021-02-22 01:50:56,971 INFO L185 CegarLoopUtils]: At program point L17-2(lines 13 20) the Hoare annotation is: (<= 15 main_~a~0) [2021-02-22 01:50:56,972 INFO L185 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: (and (<= |main_#t~ret8| main_~a~0) (<= 15 main_~a~0) (<= main_~a~0 |main_#t~ret8|) (= main_~b~0 0) (<= main_~a~0 15)) [2021-02-22 01:50:56,972 INFO L185 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: (and (<= |main_#t~ret8| main_~a~0) (<= main_~a~0 main_~result~0) (<= 15 main_~a~0) (<= main_~a~0 |main_#t~ret8|) (<= main_~result~0 main_~a~0) (= main_~b~0 0) (<= main_~a~0 15)) [2021-02-22 01:50:56,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:50:56 BoogieIcfgContainer [2021-02-22 01:50:56,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:50:56,998 INFO L168 Benchmark]: Toolchain (without parser) took 30610.62 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 127.9 MB in the beginning and 299.7 MB in the end (delta: -171.7 MB). Peak memory consumption was 222.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:50:56,998 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:50:56,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.16 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:50:56,999 INFO L168 Benchmark]: Boogie Preprocessor took 31.71 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:50:56,999 INFO L168 Benchmark]: RCFGBuilder took 362.20 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 102.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:50:56,999 INFO L168 Benchmark]: TraceAbstraction took 29937.95 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 102.2 MB in the beginning and 299.7 MB in the end (delta: -197.5 MB). Peak memory consumption was 195.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:50:57,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.16 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.71 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 362.20 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 102.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 29937.95 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 102.2 MB in the beginning and 299.7 MB in the end (delta: -197.5 MB). Peak memory consumption was 195.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum: ((((((((((((((((((n == \old(n) && \old(m) + 6 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 6) || ((((n == \old(n) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 9 <= \result) && \old(n) <= 9)) || ((((n == \old(n) && \old(m) + 10 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 10)) || ((((n == \old(n) && \old(m) + 1 <= \result) && m == \old(m)) && \old(n) <= 1) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && 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) && \result <= \old(m)) && m == \old(m)) && \old(n) + \old(m) <= \result)) || ((((n == \old(n) && \old(m) + 14 <= \result) && m == \old(m)) && \old(n) <= 14) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 8) && \result <= \old(n) + \old(m)) && \old(m) + 8 <= \result)) || ((((n == \old(n) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 12) && \old(m) + 12 <= \result)) || ((((n == \old(n) && m == \old(m)) && \old(m) + 7 <= \result) && \old(n) <= 7) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && \old(m) + 11 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 11)) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 13) && \result <= \old(n) + \old(m)) && \old(m) + 13 <= \result)) || ((((n == \old(n) && \old(n) <= 5) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 5 <= \result)) || (((n == \old(n) && \old(m) + 15 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 15 <= a - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.5s, OverallIterations: 16, TraceHistogramMax: 16, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 1379 SDslu, 1069 SDs, 0 SdLazy, 2792 SolverSat, 399 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 744 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2812 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 46 PreInvPairs, 271 NumberOfFragments, 1793 HoareAnnotationTreeSize, 46 FomulaSimplifications, 4470 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 36 FomulaSimplificationsInter, 6409 FormulaSimplificationTreeSizeReductionInter, 4.7s 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...