/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_25x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:57:29,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:57:29,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:57:29,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:57:29,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:57:29,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:57:29,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:57:29,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:57:29,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:57:29,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:57:29,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:57:29,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:57:29,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:57:29,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:57:29,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:57:29,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:57:29,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:57:29,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:57:29,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:57:29,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:57:29,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:57:29,709 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:57:29,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:57:29,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:57:29,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:57:29,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:57:29,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:57:29,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:57:29,711 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:57:29,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:57:29,711 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:57:29,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:57:29,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:57:29,712 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:57:29,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:57:29,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:57:29,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:57:29,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:57:29,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:57:29,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:57:29,714 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:57:30,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:57:30,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:57:30,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:57:30,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:57:30,143 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:57:30,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_25x0-1.c [2021-02-23 17:57:30,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9fbd4651/4f2442d7e50b4aeda0d10b2365645821/FLAG97d375149 [2021-02-23 17:57:30,977 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:57:30,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_25x0-1.c [2021-02-23 17:57:30,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9fbd4651/4f2442d7e50b4aeda0d10b2365645821/FLAG97d375149 [2021-02-23 17:57:31,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9fbd4651/4f2442d7e50b4aeda0d10b2365645821 [2021-02-23 17:57:31,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:57:31,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:57:31,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:57:31,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:57:31,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:57:31,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:57:31" (1/1) ... [2021-02-23 17:57:31,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e96c73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31, skipping insertion in model container [2021-02-23 17:57:31,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:57:31" (1/1) ... [2021-02-23 17:57:31,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:57:31,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:57:31,543 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_25x0-1.c[481,494] [2021-02-23 17:57:31,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:57:31,563 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:57:31,584 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_25x0-1.c[481,494] [2021-02-23 17:57:31,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:57:31,602 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:57:31,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31 WrapperNode [2021-02-23 17:57:31,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:57:31,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:57:31,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:57:31,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:57:31,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31" (1/1) ... [2021-02-23 17:57:31,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31" (1/1) ... [2021-02-23 17:57:31,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31" (1/1) ... [2021-02-23 17:57:31,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31" (1/1) ... [2021-02-23 17:57:31,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31" (1/1) ... [2021-02-23 17:57:31,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31" (1/1) ... [2021-02-23 17:57:31,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31" (1/1) ... [2021-02-23 17:57:31,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:57:31,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:57:31,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:57:31,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:57:31,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:57:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:57:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:57:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:57:31,739 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-02-23 17:57:31,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:57:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:57:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:57:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:57:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:57:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-02-23 17:57:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:57:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:57:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:57:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:57:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:57:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:57:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:57:31,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:57:31,986 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:57:31,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:57:31 BoogieIcfgContainer [2021-02-23 17:57:31,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:57:31,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:57:31,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:57:32,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:57:32,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:57:31" (1/3) ... [2021-02-23 17:57:32,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488f1f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:57:32, skipping insertion in model container [2021-02-23 17:57:32,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:57:31" (2/3) ... [2021-02-23 17:57:32,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488f1f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:57:32, skipping insertion in model container [2021-02-23 17:57:32,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:57:31" (3/3) ... [2021-02-23 17:57:32,012 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_25x0-1.c [2021-02-23 17:57:32,029 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:57:32,041 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:57:32,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:57:32,101 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:57:32,101 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:57:32,101 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:57:32,101 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:57:32,102 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:57:32,102 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:57:32,102 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:57:32,102 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:57:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-02-23 17:57:32,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 17:57:32,133 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:32,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:32,135 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:32,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:32,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133070, now seen corresponding path program 1 times [2021-02-23 17:57:32,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:32,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066723948] [2021-02-23 17:57:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:32,283 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:32,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:32,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:32,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:32,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:32,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:32,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:32,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:57:32,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066723948] [2021-02-23 17:57:32,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:32,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:57:32,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319594097] [2021-02-23 17:57:32,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:57:32,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:32,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:57:32,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:57:32,785 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2021-02-23 17:57:33,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:33,145 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-02-23 17:57:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:57:33,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-23 17:57:33,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:33,171 INFO L225 Difference]: With dead ends: 48 [2021-02-23 17:57:33,172 INFO L226 Difference]: Without dead ends: 33 [2021-02-23 17:57:33,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:57:33,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-23 17:57:33,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-23 17:57:33,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-23 17:57:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-02-23 17:57:33,242 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2021-02-23 17:57:33,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:33,243 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-02-23 17:57:33,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:57:33,243 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-02-23 17:57:33,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-23 17:57:33,245 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:33,245 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:33,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:57:33,246 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:33,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:33,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1822905144, now seen corresponding path program 1 times [2021-02-23 17:57:33,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:33,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546846394] [2021-02-23 17:57:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:33,251 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:33,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:33,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:33,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-23 17:57:33,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546846394] [2021-02-23 17:57:33,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:33,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 17:57:33,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654839329] [2021-02-23 17:57:33,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 17:57:33,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:33,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 17:57:33,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 17:57:33,420 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2021-02-23 17:57:33,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:33,691 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-02-23 17:57:33,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 17:57:33,691 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2021-02-23 17:57:33,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:33,693 INFO L225 Difference]: With dead ends: 44 [2021-02-23 17:57:33,693 INFO L226 Difference]: Without dead ends: 38 [2021-02-23 17:57:33,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:57:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-23 17:57:33,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-23 17:57:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-23 17:57:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-23 17:57:33,712 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 35 [2021-02-23 17:57:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:33,712 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-23 17:57:33,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 17:57:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-23 17:57:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 17:57:33,715 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:33,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:33,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:57:33,715 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:33,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1004193542, now seen corresponding path program 2 times [2021-02-23 17:57:33,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:33,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918290110] [2021-02-23 17:57:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:33,720 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:33,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:33,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:33,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:33,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:33,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:33,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:33,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-23 17:57:34,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918290110] [2021-02-23 17:57:34,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:34,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:57:34,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742566479] [2021-02-23 17:57:34,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:57:34,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:34,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:57:34,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:57:34,028 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2021-02-23 17:57:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:34,283 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-02-23 17:57:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 17:57:34,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2021-02-23 17:57:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:34,285 INFO L225 Difference]: With dead ends: 49 [2021-02-23 17:57:34,285 INFO L226 Difference]: Without dead ends: 43 [2021-02-23 17:57:34,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:57:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-02-23 17:57:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-02-23 17:57:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-23 17:57:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-02-23 17:57:34,300 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 44 [2021-02-23 17:57:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:34,300 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-02-23 17:57:34,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:57:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-02-23 17:57:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 17:57:34,302 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:34,302 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:34,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:57:34,303 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:34,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:34,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1655724848, now seen corresponding path program 3 times [2021-02-23 17:57:34,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:34,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580782939] [2021-02-23 17:57:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:34,306 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:34,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:34,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:34,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-23 17:57:34,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580782939] [2021-02-23 17:57:34,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:34,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:57:34,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866187873] [2021-02-23 17:57:34,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:57:34,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:34,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:57:34,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:57:34,582 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 10 states. [2021-02-23 17:57:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:34,907 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-02-23 17:57:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 17:57:34,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2021-02-23 17:57:34,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:34,909 INFO L225 Difference]: With dead ends: 54 [2021-02-23 17:57:34,909 INFO L226 Difference]: Without dead ends: 48 [2021-02-23 17:57:34,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:57:34,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-23 17:57:34,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-02-23 17:57:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-23 17:57:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-02-23 17:57:34,923 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 53 [2021-02-23 17:57:34,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:34,923 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-02-23 17:57:34,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:57:34,924 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-02-23 17:57:34,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 17:57:34,925 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:34,925 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:34,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:57:34,926 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:34,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:34,926 INFO L82 PathProgramCache]: Analyzing trace with hash 54098690, now seen corresponding path program 4 times [2021-02-23 17:57:34,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:34,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616168773] [2021-02-23 17:57:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:34,929 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:34,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:34,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:34,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:34,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:35,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-02-23 17:57:35,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616168773] [2021-02-23 17:57:35,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:35,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 17:57:35,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476626474] [2021-02-23 17:57:35,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 17:57:35,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:35,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 17:57:35,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:57:35,153 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 11 states. [2021-02-23 17:57:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:35,599 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-02-23 17:57:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:57:35,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2021-02-23 17:57:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:35,601 INFO L225 Difference]: With dead ends: 59 [2021-02-23 17:57:35,601 INFO L226 Difference]: Without dead ends: 53 [2021-02-23 17:57:35,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-02-23 17:57:35,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-23 17:57:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-02-23 17:57:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-23 17:57:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-02-23 17:57:35,617 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 62 [2021-02-23 17:57:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:35,617 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-02-23 17:57:35,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 17:57:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-02-23 17:57:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-23 17:57:35,619 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:35,619 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:35,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:57:35,619 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:35,620 INFO L82 PathProgramCache]: Analyzing trace with hash -406982872, now seen corresponding path program 5 times [2021-02-23 17:57:35,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:35,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522434154] [2021-02-23 17:57:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:35,622 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:35,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:35,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:35,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:35,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:35,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:35,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:35,882 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-02-23 17:57:35,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522434154] [2021-02-23 17:57:35,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:35,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 17:57:35,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459684504] [2021-02-23 17:57:35,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 17:57:35,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:35,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 17:57:35,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:57:35,884 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 12 states. [2021-02-23 17:57:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:36,352 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2021-02-23 17:57:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:57:36,352 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2021-02-23 17:57:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:36,354 INFO L225 Difference]: With dead ends: 64 [2021-02-23 17:57:36,354 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 17:57:36,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-02-23 17:57:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 17:57:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-23 17:57:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-23 17:57:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-02-23 17:57:36,370 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 71 [2021-02-23 17:57:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:36,370 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-02-23 17:57:36,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 17:57:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-02-23 17:57:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-23 17:57:36,372 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:36,372 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:36,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 17:57:36,372 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:36,373 INFO L82 PathProgramCache]: Analyzing trace with hash 507179274, now seen corresponding path program 6 times [2021-02-23 17:57:36,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:36,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2314890] [2021-02-23 17:57:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:36,375 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:36,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:36,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:36,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:36,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:36,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-02-23 17:57:36,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2314890] [2021-02-23 17:57:36,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:36,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 17:57:36,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975641452] [2021-02-23 17:57:36,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 17:57:36,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:36,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 17:57:36,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-02-23 17:57:36,697 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 13 states. [2021-02-23 17:57:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:37,163 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2021-02-23 17:57:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:57:37,163 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-23 17:57:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:37,167 INFO L225 Difference]: With dead ends: 69 [2021-02-23 17:57:37,167 INFO L226 Difference]: Without dead ends: 63 [2021-02-23 17:57:37,168 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 [2021-02-23 17:57:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-23 17:57:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-02-23 17:57:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-23 17:57:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-02-23 17:57:37,198 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2021-02-23 17:57:37,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:37,200 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-02-23 17:57:37,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 17:57:37,200 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-02-23 17:57:37,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-23 17:57:37,209 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:37,209 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:37,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 17:57:37,209 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:37,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:37,210 INFO L82 PathProgramCache]: Analyzing trace with hash -326332640, now seen corresponding path program 7 times [2021-02-23 17:57:37,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:37,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513233390] [2021-02-23 17:57:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:37,216 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:37,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:37,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:37,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:37,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:37,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:37,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-02-23 17:57:37,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513233390] [2021-02-23 17:57:37,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:37,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:57:37,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630438845] [2021-02-23 17:57:37,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:57:37,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:37,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:57:37,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:57:37,600 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 14 states. [2021-02-23 17:57:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:38,120 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2021-02-23 17:57:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 17:57:38,120 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2021-02-23 17:57:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:38,122 INFO L225 Difference]: With dead ends: 74 [2021-02-23 17:57:38,122 INFO L226 Difference]: Without dead ends: 68 [2021-02-23 17:57:38,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2021-02-23 17:57:38,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-23 17:57:38,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-02-23 17:57:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-23 17:57:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-02-23 17:57:38,141 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 89 [2021-02-23 17:57:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:38,142 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-02-23 17:57:38,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:57:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-02-23 17:57:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-23 17:57:38,143 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:38,143 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:38,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 17:57:38,144 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:38,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:38,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1949113106, now seen corresponding path program 8 times [2021-02-23 17:57:38,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:38,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146807713] [2021-02-23 17:57:38,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:38,147 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:38,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:38,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:38,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:38,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:38,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:38,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-02-23 17:57:38,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146807713] [2021-02-23 17:57:38,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:38,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 17:57:38,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237907183] [2021-02-23 17:57:38,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 17:57:38,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:38,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 17:57:38,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-23 17:57:38,557 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 15 states. [2021-02-23 17:57:39,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:39,160 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2021-02-23 17:57:39,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 17:57:39,161 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2021-02-23 17:57:39,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:39,162 INFO L225 Difference]: With dead ends: 79 [2021-02-23 17:57:39,162 INFO L226 Difference]: Without dead ends: 73 [2021-02-23 17:57:39,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2021-02-23 17:57:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-23 17:57:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-23 17:57:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 17:57:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-02-23 17:57:39,179 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 98 [2021-02-23 17:57:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:39,179 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-02-23 17:57:39,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 17:57:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-02-23 17:57:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-02-23 17:57:39,180 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:39,181 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:39,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 17:57:39,181 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:39,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1213774616, now seen corresponding path program 9 times [2021-02-23 17:57:39,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:39,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450143104] [2021-02-23 17:57:39,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:39,184 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:39,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:39,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:39,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:39,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-02-23 17:57:39,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450143104] [2021-02-23 17:57:39,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:39,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 17:57:39,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731800768] [2021-02-23 17:57:39,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 17:57:39,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:39,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 17:57:39,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:57:39,645 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 16 states. [2021-02-23 17:57:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:40,234 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-02-23 17:57:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 17:57:40,235 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 107 [2021-02-23 17:57:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:40,236 INFO L225 Difference]: With dead ends: 84 [2021-02-23 17:57:40,236 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 17:57:40,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2021-02-23 17:57:40,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 17:57:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-23 17:57:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-23 17:57:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2021-02-23 17:57:40,253 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 107 [2021-02-23 17:57:40,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:40,253 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2021-02-23 17:57:40,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 17:57:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2021-02-23 17:57:40,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-02-23 17:57:40,255 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:40,255 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:40,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 17:57:40,255 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:40,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:40,256 INFO L82 PathProgramCache]: Analyzing trace with hash -241993446, now seen corresponding path program 10 times [2021-02-23 17:57:40,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:40,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835488183] [2021-02-23 17:57:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:40,258 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:40,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:40,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:40,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:40,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:40,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:40,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-02-23 17:57:40,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835488183] [2021-02-23 17:57:40,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:40,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-23 17:57:40,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878539835] [2021-02-23 17:57:40,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 17:57:40,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:40,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 17:57:40,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-02-23 17:57:40,759 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 17 states. [2021-02-23 17:57:41,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:41,438 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2021-02-23 17:57:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 17:57:41,438 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 116 [2021-02-23 17:57:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:41,440 INFO L225 Difference]: With dead ends: 89 [2021-02-23 17:57:41,440 INFO L226 Difference]: Without dead ends: 83 [2021-02-23 17:57:41,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=283, Invalid=587, Unknown=0, NotChecked=0, Total=870 [2021-02-23 17:57:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-23 17:57:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-02-23 17:57:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-23 17:57:41,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2021-02-23 17:57:41,455 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 116 [2021-02-23 17:57:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:41,455 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2021-02-23 17:57:41,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 17:57:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2021-02-23 17:57:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-02-23 17:57:41,457 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:41,457 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:41,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 17:57:41,457 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:41,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:41,458 INFO L82 PathProgramCache]: Analyzing trace with hash -790695152, now seen corresponding path program 11 times [2021-02-23 17:57:41,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:41,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800899820] [2021-02-23 17:57:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:41,460 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:41,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:41,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:41,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:41,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:41,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:41,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:41,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-02-23 17:57:42,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800899820] [2021-02-23 17:57:42,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:42,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 17:57:42,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377695733] [2021-02-23 17:57:42,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 17:57:42,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:42,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 17:57:42,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2021-02-23 17:57:42,117 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 18 states. [2021-02-23 17:57:42,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:42,879 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-02-23 17:57:42,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 17:57:42,880 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 125 [2021-02-23 17:57:42,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:42,881 INFO L225 Difference]: With dead ends: 94 [2021-02-23 17:57:42,881 INFO L226 Difference]: Without dead ends: 88 [2021-02-23 17:57:42,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=667, Unknown=0, NotChecked=0, Total=992 [2021-02-23 17:57:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-02-23 17:57:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-02-23 17:57:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-02-23 17:57:42,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2021-02-23 17:57:42,897 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 125 [2021-02-23 17:57:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:42,898 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2021-02-23 17:57:42,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 17:57:42,898 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2021-02-23 17:57:42,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-02-23 17:57:42,900 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:42,900 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:42,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 17:57:42,900 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:42,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:42,901 INFO L82 PathProgramCache]: Analyzing trace with hash -126776542, now seen corresponding path program 12 times [2021-02-23 17:57:42,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:42,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340051038] [2021-02-23 17:57:42,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:42,903 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:42,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:42,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:42,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:42,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:42,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:42,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:42,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:42,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:42,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:43,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:43,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:43,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-02-23 17:57:43,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340051038] [2021-02-23 17:57:43,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:43,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 17:57:43,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582287136] [2021-02-23 17:57:43,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 17:57:43,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:43,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 17:57:43,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2021-02-23 17:57:43,604 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 19 states. [2021-02-23 17:57:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:44,451 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2021-02-23 17:57:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 17:57:44,452 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 134 [2021-02-23 17:57:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:44,453 INFO L225 Difference]: With dead ends: 99 [2021-02-23 17:57:44,453 INFO L226 Difference]: Without dead ends: 93 [2021-02-23 17:57:44,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=370, Invalid=752, Unknown=0, NotChecked=0, Total=1122 [2021-02-23 17:57:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-02-23 17:57:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-02-23 17:57:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-02-23 17:57:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2021-02-23 17:57:44,468 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 134 [2021-02-23 17:57:44,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:44,468 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2021-02-23 17:57:44,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 17:57:44,468 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2021-02-23 17:57:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-02-23 17:57:44,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:44,470 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:44,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 17:57:44,470 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:44,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:44,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1918613256, now seen corresponding path program 13 times [2021-02-23 17:57:44,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:44,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981195718] [2021-02-23 17:57:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:44,473 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:44,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:44,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:44,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:44,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:44,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:44,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:45,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:45,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-02-23 17:57:45,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981195718] [2021-02-23 17:57:45,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:45,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 17:57:45,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063031466] [2021-02-23 17:57:45,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 17:57:45,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:45,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 17:57:45,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-02-23 17:57:45,145 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 20 states. [2021-02-23 17:57:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:45,981 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2021-02-23 17:57:45,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 17:57:45,981 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 143 [2021-02-23 17:57:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:45,983 INFO L225 Difference]: With dead ends: 104 [2021-02-23 17:57:45,983 INFO L226 Difference]: Without dead ends: 98 [2021-02-23 17:57:45,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=842, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 17:57:45,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-02-23 17:57:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-02-23 17:57:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-02-23 17:57:45,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-02-23 17:57:45,998 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 143 [2021-02-23 17:57:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:45,998 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-02-23 17:57:45,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 17:57:45,999 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-02-23 17:57:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-02-23 17:57:46,000 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:46,001 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:46,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 17:57:46,001 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:46,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:46,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1212862762, now seen corresponding path program 14 times [2021-02-23 17:57:46,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:46,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455409113] [2021-02-23 17:57:46,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:46,004 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:46,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:46,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:46,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:46,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:46,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-02-23 17:57:46,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455409113] [2021-02-23 17:57:46,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:46,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-23 17:57:46,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665369670] [2021-02-23 17:57:46,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 17:57:46,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:46,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 17:57:46,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2021-02-23 17:57:46,844 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 21 states. [2021-02-23 17:57:47,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:47,744 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2021-02-23 17:57:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 17:57:47,745 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 152 [2021-02-23 17:57:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:47,746 INFO L225 Difference]: With dead ends: 109 [2021-02-23 17:57:47,747 INFO L226 Difference]: Without dead ends: 103 [2021-02-23 17:57:47,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=469, Invalid=937, Unknown=0, NotChecked=0, Total=1406 [2021-02-23 17:57:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-02-23 17:57:47,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-02-23 17:57:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-02-23 17:57:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2021-02-23 17:57:47,762 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 152 [2021-02-23 17:57:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:47,762 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2021-02-23 17:57:47,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 17:57:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2021-02-23 17:57:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 17:57:47,764 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:47,765 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:47,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 17:57:47,765 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:47,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:47,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1200326400, now seen corresponding path program 15 times [2021-02-23 17:57:47,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:47,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167386590] [2021-02-23 17:57:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:47,768 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:47,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:47,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:47,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:47,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:47,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:47,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:48,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:48,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:48,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-02-23 17:57:48,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167386590] [2021-02-23 17:57:48,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:48,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-23 17:57:48,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88624158] [2021-02-23 17:57:48,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 17:57:48,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:48,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 17:57:48,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2021-02-23 17:57:48,578 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 22 states. [2021-02-23 17:57:49,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:49,544 INFO L93 Difference]: Finished difference Result 114 states and 115 transitions. [2021-02-23 17:57:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 17:57:49,545 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 161 [2021-02-23 17:57:49,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:49,546 INFO L225 Difference]: With dead ends: 114 [2021-02-23 17:57:49,546 INFO L226 Difference]: Without dead ends: 108 [2021-02-23 17:57:49,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=523, Invalid=1037, Unknown=0, NotChecked=0, Total=1560 [2021-02-23 17:57:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-02-23 17:57:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-02-23 17:57:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-23 17:57:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2021-02-23 17:57:49,564 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 161 [2021-02-23 17:57:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:49,565 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2021-02-23 17:57:49,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 17:57:49,565 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2021-02-23 17:57:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-23 17:57:49,567 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:49,567 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:49,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 17:57:49,567 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:49,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:49,568 INFO L82 PathProgramCache]: Analyzing trace with hash -433927374, now seen corresponding path program 16 times [2021-02-23 17:57:49,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:49,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016263470] [2021-02-23 17:57:49,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:49,571 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:49,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:49,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:49,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:49,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:49,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:49,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:49,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:49,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:49,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:49,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:49,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:49,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:49,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:49,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:50,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:50,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:50,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:50,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:50,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:50,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:50,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:50,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:50,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:50,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:50,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-02-23 17:57:50,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016263470] [2021-02-23 17:57:50,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:50,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-23 17:57:50,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15251359] [2021-02-23 17:57:50,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-23 17:57:50,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:50,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-23 17:57:50,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2021-02-23 17:57:50,493 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 23 states. [2021-02-23 17:57:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:51,597 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2021-02-23 17:57:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 17:57:51,597 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 170 [2021-02-23 17:57:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:51,599 INFO L225 Difference]: With dead ends: 119 [2021-02-23 17:57:51,599 INFO L226 Difference]: Without dead ends: 113 [2021-02-23 17:57:51,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=580, Invalid=1142, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 17:57:51,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-02-23 17:57:51,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-02-23 17:57:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-02-23 17:57:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2021-02-23 17:57:51,616 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 170 [2021-02-23 17:57:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:51,616 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2021-02-23 17:57:51,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-23 17:57:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2021-02-23 17:57:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-02-23 17:57:51,619 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:51,619 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:51,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 17:57:51,619 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:51,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:51,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1314200840, now seen corresponding path program 17 times [2021-02-23 17:57:51,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:51,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907066053] [2021-02-23 17:57:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:51,622 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:51,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:51,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:51,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:51,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:51,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:51,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:51,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:51,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:51,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:51,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:51,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:52,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:52,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:52,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-02-23 17:57:52,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907066053] [2021-02-23 17:57:52,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:52,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-23 17:57:52,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094672477] [2021-02-23 17:57:52,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 17:57:52,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:52,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 17:57:52,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2021-02-23 17:57:52,587 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 24 states. [2021-02-23 17:57:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:53,669 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2021-02-23 17:57:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 17:57:53,669 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 179 [2021-02-23 17:57:53,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:53,670 INFO L225 Difference]: With dead ends: 124 [2021-02-23 17:57:53,671 INFO L226 Difference]: Without dead ends: 118 [2021-02-23 17:57:53,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=640, Invalid=1252, Unknown=0, NotChecked=0, Total=1892 [2021-02-23 17:57:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-02-23 17:57:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-02-23 17:57:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-02-23 17:57:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2021-02-23 17:57:53,687 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 179 [2021-02-23 17:57:53,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:53,687 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2021-02-23 17:57:53,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 17:57:53,687 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2021-02-23 17:57:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-02-23 17:57:53,689 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:53,690 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:53,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 17:57:53,690 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:53,690 INFO L82 PathProgramCache]: Analyzing trace with hash 75299130, now seen corresponding path program 18 times [2021-02-23 17:57:53,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:53,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635396475] [2021-02-23 17:57:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:53,693 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:53,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:53,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:53,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:53,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:53,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:53,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:53,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:53,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:53,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:53,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:53,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:53,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:53,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:53,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:53,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:53,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:53,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:54,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:54,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:54,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2021-02-23 17:57:54,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635396475] [2021-02-23 17:57:54,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:54,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-02-23 17:57:54,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268305257] [2021-02-23 17:57:54,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 17:57:54,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:54,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 17:57:54,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2021-02-23 17:57:54,798 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 25 states. [2021-02-23 17:57:56,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:56,024 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2021-02-23 17:57:56,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-23 17:57:56,025 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 188 [2021-02-23 17:57:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:56,027 INFO L225 Difference]: With dead ends: 129 [2021-02-23 17:57:56,027 INFO L226 Difference]: Without dead ends: 123 [2021-02-23 17:57:56,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=703, Invalid=1367, Unknown=0, NotChecked=0, Total=2070 [2021-02-23 17:57:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-02-23 17:57:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-02-23 17:57:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-02-23 17:57:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2021-02-23 17:57:56,044 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 188 [2021-02-23 17:57:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:56,045 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2021-02-23 17:57:56,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 17:57:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2021-02-23 17:57:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-02-23 17:57:56,047 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:56,048 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:56,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 17:57:56,048 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:56,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:56,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1886800624, now seen corresponding path program 19 times [2021-02-23 17:57:56,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:56,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27573113] [2021-02-23 17:57:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:56,051 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:56,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:56,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:56,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:56,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:56,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:56,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-02-23 17:57:57,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27573113] [2021-02-23 17:57:57,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:57,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-02-23 17:57:57,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156446171] [2021-02-23 17:57:57,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-23 17:57:57,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:57,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-23 17:57:57,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2021-02-23 17:57:57,152 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 26 states. [2021-02-23 17:57:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:58,332 INFO L93 Difference]: Finished difference Result 134 states and 135 transitions. [2021-02-23 17:57:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 17:57:58,332 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 197 [2021-02-23 17:57:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:58,335 INFO L225 Difference]: With dead ends: 134 [2021-02-23 17:57:58,335 INFO L226 Difference]: Without dead ends: 128 [2021-02-23 17:57:58,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=769, Invalid=1487, Unknown=0, NotChecked=0, Total=2256 [2021-02-23 17:57:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-02-23 17:57:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-02-23 17:57:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-02-23 17:57:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2021-02-23 17:57:58,360 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 197 [2021-02-23 17:57:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:58,360 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2021-02-23 17:57:58,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-23 17:57:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2021-02-23 17:57:58,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-02-23 17:57:58,363 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:58,363 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:57:58,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 17:57:58,363 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:58,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash -346236094, now seen corresponding path program 20 times [2021-02-23 17:57:58,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:58,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047681167] [2021-02-23 17:57:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:58,366 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:58,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:58,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:58,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:58,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:58,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:58,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:59,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:59,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:59,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:59,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:59,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:59,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:59,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:59,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:59,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:59,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:59,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2021-02-23 17:57:59,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047681167] [2021-02-23 17:57:59,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:59,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-02-23 17:57:59,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900727504] [2021-02-23 17:57:59,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-23 17:57:59,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:59,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-23 17:57:59,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2021-02-23 17:57:59,552 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 27 states. [2021-02-23 17:58:00,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:00,876 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2021-02-23 17:58:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 17:58:00,877 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 206 [2021-02-23 17:58:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:00,879 INFO L225 Difference]: With dead ends: 139 [2021-02-23 17:58:00,879 INFO L226 Difference]: Without dead ends: 133 [2021-02-23 17:58:00,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=838, Invalid=1612, Unknown=0, NotChecked=0, Total=2450 [2021-02-23 17:58:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-02-23 17:58:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-02-23 17:58:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-23 17:58:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2021-02-23 17:58:00,897 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 206 [2021-02-23 17:58:00,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:00,897 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2021-02-23 17:58:00,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-23 17:58:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2021-02-23 17:58:00,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-02-23 17:58:00,899 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:00,899 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:58:00,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-23 17:58:00,899 INFO L428 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:00,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1171636504, now seen corresponding path program 21 times [2021-02-23 17:58:00,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:00,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556045287] [2021-02-23 17:58:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:00,902 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:00,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:00,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:00,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:00,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:00,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:00,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:00,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:00,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:00,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:00,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:58:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:01,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:01,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:01,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:01,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-02-23 17:58:02,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556045287] [2021-02-23 17:58:02,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:02,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-02-23 17:58:02,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813562516] [2021-02-23 17:58:02,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-23 17:58:02,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:02,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-23 17:58:02,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2021-02-23 17:58:02,449 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 28 states. [2021-02-23 17:58:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:03,890 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2021-02-23 17:58:03,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-23 17:58:03,893 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 215 [2021-02-23 17:58:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:03,895 INFO L225 Difference]: With dead ends: 144 [2021-02-23 17:58:03,895 INFO L226 Difference]: Without dead ends: 138 [2021-02-23 17:58:03,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=910, Invalid=1742, Unknown=0, NotChecked=0, Total=2652 [2021-02-23 17:58:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-02-23 17:58:03,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-02-23 17:58:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2021-02-23 17:58:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2021-02-23 17:58:03,914 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 215 [2021-02-23 17:58:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:03,915 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2021-02-23 17:58:03,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-23 17:58:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2021-02-23 17:58:03,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-02-23 17:58:03,917 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:03,917 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:58:03,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-23 17:58:03,917 INFO L428 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:03,918 INFO L82 PathProgramCache]: Analyzing trace with hash -532287158, now seen corresponding path program 22 times [2021-02-23 17:58:03,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:03,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894423306] [2021-02-23 17:58:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:03,920 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:03,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:03,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:03,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:03,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:03,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:03,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:04,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:58:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:04,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:04,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:04,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:05,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:05,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:05,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:05,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:05,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:05,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:05,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:05,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:05,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:05,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:05,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:05,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:05,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:05,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:05,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:05,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-02-23 17:58:05,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894423306] [2021-02-23 17:58:05,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:05,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-02-23 17:58:05,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260361027] [2021-02-23 17:58:05,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-23 17:58:05,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:05,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-23 17:58:05,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812 [2021-02-23 17:58:05,420 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 29 states. [2021-02-23 17:58:06,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:06,982 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2021-02-23 17:58:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 17:58:06,982 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 224 [2021-02-23 17:58:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:06,984 INFO L225 Difference]: With dead ends: 149 [2021-02-23 17:58:06,984 INFO L226 Difference]: Without dead ends: 143 [2021-02-23 17:58:06,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=985, Invalid=1877, Unknown=0, NotChecked=0, Total=2862 [2021-02-23 17:58:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-02-23 17:58:06,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-02-23 17:58:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-02-23 17:58:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2021-02-23 17:58:07,000 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 224 [2021-02-23 17:58:07,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:07,000 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2021-02-23 17:58:07,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-02-23 17:58:07,000 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2021-02-23 17:58:07,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-02-23 17:58:07,002 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:07,002 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:58:07,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-23 17:58:07,003 INFO L428 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:07,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:07,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1401110240, now seen corresponding path program 23 times [2021-02-23 17:58:07,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:07,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525507488] [2021-02-23 17:58:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:07,006 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:07,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:07,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:07,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:58:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:07,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:07,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:07,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:08,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:08,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:08,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:08,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:08,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:08,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:08,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2021-02-23 17:58:08,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525507488] [2021-02-23 17:58:08,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:08,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-02-23 17:58:08,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023749313] [2021-02-23 17:58:08,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-23 17:58:08,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:08,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-23 17:58:08,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2021-02-23 17:58:08,613 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 30 states. [2021-02-23 17:58:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:10,273 INFO L93 Difference]: Finished difference Result 154 states and 155 transitions. [2021-02-23 17:58:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-23 17:58:10,274 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 233 [2021-02-23 17:58:10,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:10,277 INFO L225 Difference]: With dead ends: 154 [2021-02-23 17:58:10,277 INFO L226 Difference]: Without dead ends: 148 [2021-02-23 17:58:10,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1063, Invalid=2017, Unknown=0, NotChecked=0, Total=3080 [2021-02-23 17:58:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-02-23 17:58:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-02-23 17:58:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-02-23 17:58:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2021-02-23 17:58:10,297 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 233 [2021-02-23 17:58:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:10,297 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2021-02-23 17:58:10,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-02-23 17:58:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2021-02-23 17:58:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-02-23 17:58:10,299 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:10,299 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:58:10,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-23 17:58:10,300 INFO L428 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:10,300 INFO L82 PathProgramCache]: Analyzing trace with hash 238795602, now seen corresponding path program 24 times [2021-02-23 17:58:10,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:10,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690177909] [2021-02-23 17:58:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:10,303 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:10,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:10,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:10,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:58:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:10,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:10,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:10,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:11,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:11,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:11,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2021-02-23 17:58:11,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690177909] [2021-02-23 17:58:11,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:11,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-02-23 17:58:11,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813550912] [2021-02-23 17:58:11,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-23 17:58:11,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:11,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-23 17:58:11,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=545, Unknown=0, NotChecked=0, Total=930 [2021-02-23 17:58:11,997 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 31 states. [2021-02-23 17:58:13,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:13,685 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2021-02-23 17:58:13,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-23 17:58:13,686 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 242 [2021-02-23 17:58:13,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:13,688 INFO L225 Difference]: With dead ends: 159 [2021-02-23 17:58:13,689 INFO L226 Difference]: Without dead ends: 153 [2021-02-23 17:58:13,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1144, Invalid=2162, Unknown=0, NotChecked=0, Total=3306 [2021-02-23 17:58:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-02-23 17:58:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-02-23 17:58:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-02-23 17:58:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2021-02-23 17:58:13,708 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 242 [2021-02-23 17:58:13,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:13,708 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2021-02-23 17:58:13,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-02-23 17:58:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2021-02-23 17:58:13,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-02-23 17:58:13,710 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:58:13,710 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:58:13,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-23 17:58:13,711 INFO L428 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:58:13,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:58:13,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1480733992, now seen corresponding path program 25 times [2021-02-23 17:58:13,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:58:13,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463118893] [2021-02-23 17:58:13,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:58:13,713 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:58:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:13,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:13,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:13,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:13,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:13,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:13,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:13,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:13,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:58:13,870 WARN L141 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-02-23 17:58:13,871 WARN L147 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size 23 [2021-02-23 17:58:13,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:13,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:13,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:58:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:13,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:13,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:58:13,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:58:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:14,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:14,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:14,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:14,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:14,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:14,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:14,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:14,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:14,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:14,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:14,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:14,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:14,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:14,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:14,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:14,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:14,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:14,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:14,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:15,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:15,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:15,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:15,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:15,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:15,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:15,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:15,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:15,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:15,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:15,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:15,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:15,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:15,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:15,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:15,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:15,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:15,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:15,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:15,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:15,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:15,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:15,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:15,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:15,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:15,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:16,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:16,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:16,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:16,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:16,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:16,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:16,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:16,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:16,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:16,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:16,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:16,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:16,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:16,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:16,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:16,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:16,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:16,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:16,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:16,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:16,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:16,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:16,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:17,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:17,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:17,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:17,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:17,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:17,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:17,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:17,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:17,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:17,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:17,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:17,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:17,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:17,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:17,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:17,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:17,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:17,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:58:17,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:17,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:58:17,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:58:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:58:17,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:58:17,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:58:17,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:58:17,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:58:17,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:58:18,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1251 trivial. 0 not checked. [2021-02-23 17:58:18,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463118893] [2021-02-23 17:58:18,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:58:18,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-02-23 17:58:18,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510851683] [2021-02-23 17:58:18,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-02-23 17:58:18,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:58:18,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-02-23 17:58:18,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=727, Invalid=3055, Unknown=0, NotChecked=0, Total=3782 [2021-02-23 17:58:18,957 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 62 states. [2021-02-23 17:58:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:58:33,641 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2021-02-23 17:58:33,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-02-23 17:58:33,641 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 251 [2021-02-23 17:58:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:58:33,642 INFO L225 Difference]: With dead ends: 153 [2021-02-23 17:58:33,642 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 17:58:33,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3032 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=4325, Invalid=17137, Unknown=0, NotChecked=0, Total=21462 [2021-02-23 17:58:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 17:58:33,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 17:58:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 17:58:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 17:58:33,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 251 [2021-02-23 17:58:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:58:33,650 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 17:58:33,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2021-02-23 17:58:33,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 17:58:33,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 17:58:33,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-23 17:58:33,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 17:58:33,791 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 122 [2021-02-23 17:58:36,136 WARN L202 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 208 DAG size of output: 161 [2021-02-23 17:58:37,582 WARN L202 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 181 DAG size of output: 134 [2021-02-23 17:58:39,078 WARN L202 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 181 DAG size of output: 134 [2021-02-23 17:58:40,601 WARN L202 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 187 DAG size of output: 137 [2021-02-23 17:58:42,059 WARN L202 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 187 DAG size of output: 137 [2021-02-23 17:58:42,223 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 17:58:42,223 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 17:58:42,223 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 17:58:42,224 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 17:58:42,224 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 17:58:42,224 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:58:42,224 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 17:58:42,224 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 17:58:42,224 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 17:58:42,224 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:58:42,225 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 17:58:42,225 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 17:58:42,225 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:58:42,225 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:58:42,225 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:58:42,225 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 17:58:42,226 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 17:58:42,227 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| 25) |sum_#res|) .cse1 .cse2) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 9) |sum_#res|) (<= |sum_#in~n| 9)) (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~n| 19) .cse1 .cse2 (<= (+ |sum_#in~m| 19) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 4) .cse1 .cse2 (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 21) |sum_#res|) (<= |sum_#in~n| 21)) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#res|) .cse1 (<= |sum_#in~n| 14) .cse2) (and .cse0 (<= (+ |sum_#in~m| 16) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 16)) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 15) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 15)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 23) |sum_#res|) .cse2 (<= |sum_#in~n| 23)) (and .cse0 (<= (+ |sum_#in~m| 11) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 11)) (and .cse0 (<= |sum_#in~n| 22) .cse1 .cse2 (<= (+ |sum_#in~m| 22) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 6)) (and .cse0 (<= |sum_#in~n| 17) .cse1 .cse2 (<= (+ |sum_#in~m| 17) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 24) |sum_#res|) (<= |sum_#in~n| 24) .cse1 .cse2) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 10)) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 20) (<= (+ |sum_#in~m| 20) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 18) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 18)) (and .cse0 (<= (+ |sum_#in~m| 2) |sum_#res|) (<= |sum_#in~n| 2) .cse1 .cse2) (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= .cse3 |sum_#res|)) (and .cse0 .cse1 (<= |sum_#in~n| 8) .cse2 (<= (+ |sum_#in~m| 8) |sum_#res|)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 13) .cse2 (<= (+ |sum_#in~m| 13) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 5) .cse1 .cse2 (<= (+ |sum_#in~m| 5) |sum_#res|))))) [2021-02-23 17:58:42,227 INFO L185 CegarLoopUtils]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (<= 1 sum_~n) (= sum_~m |sum_#in~m|)) [2021-02-23 17:58:42,227 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 (<= |sum_#in~n| 24) .cse1 .cse2 (<= (+ |sum_#in~m| 24) |sum_#t~ret7|)) (and .cse0 .cse1 (<= |sum_#in~n| 6) (<= (+ |sum_#in~m| 6) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 22) |sum_#t~ret7|) (<= |sum_#in~n| 22) .cse1 .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 16) |sum_#t~ret7|) (<= |sum_#in~n| 16) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 23) |sum_#t~ret7|) (<= |sum_#in~n| 23) .cse2) (and .cse0 (<= (+ |sum_#in~m| 3) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 3) .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 (<= (+ |sum_#in~m| 4) |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse1 .cse2) (and .cse0 (<= (+ |sum_#in~m| 21) |sum_#t~ret7|) .cse1 .cse2 (<= |sum_#in~n| 21)) (and .cse0 .cse1 (<= |sum_#in~n| 20) (<= (+ |sum_#in~m| 20) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#t~ret7|) .cse2) (and .cse0 (<= |sum_#in~n| 19) .cse1 (<= (+ |sum_#in~m| 19) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 7) (<= (+ |sum_#in~m| 7) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 15) .cse2 (<= (+ |sum_#in~m| 15) |sum_#t~ret7|)) (and .cse0 (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#t~ret7|)) (and .cse0 .cse1 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#t~ret7|) .cse2) (and .cse0 (<= |sum_#in~n| 17) .cse1 (<= (+ |sum_#in~m| 17) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 18) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 18) .cse2) (and .cse0 (<= |sum_#in~n| 5) .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~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| 25) |sum_#t~ret7|) .cse1 .cse2) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 14) .cse2))) [2021-02-23 17:58:42,227 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (<= sum_~n 0)) [2021-02-23 17:58:42,228 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 (<= |sum_#in~n| 24) .cse1 .cse2 (<= (+ |sum_#in~m| 24) |sum_#t~ret7|)) (and .cse0 .cse1 (<= |sum_#in~n| 6) (<= (+ |sum_#in~m| 6) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 22) |sum_#t~ret7|) (<= |sum_#in~n| 22) .cse1 .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 16) |sum_#t~ret7|) (<= |sum_#in~n| 16) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~m| 23) |sum_#t~ret7|) (<= |sum_#in~n| 23) .cse2) (and .cse0 (<= (+ |sum_#in~m| 3) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 3) .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 (<= (+ |sum_#in~m| 4) |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse1 .cse2) (and .cse0 (<= (+ |sum_#in~m| 21) |sum_#t~ret7|) .cse1 .cse2 (<= |sum_#in~n| 21)) (and .cse0 .cse1 (<= |sum_#in~n| 20) (<= (+ |sum_#in~m| 20) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#t~ret7|) .cse2) (and .cse0 (<= |sum_#in~n| 19) .cse1 (<= (+ |sum_#in~m| 19) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 7) (<= (+ |sum_#in~m| 7) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 15) .cse2 (<= (+ |sum_#in~m| 15) |sum_#t~ret7|)) (and .cse0 (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#t~ret7|)) (and .cse0 .cse1 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#t~ret7|) .cse2) (and .cse0 (<= |sum_#in~n| 17) .cse1 (<= (+ |sum_#in~m| 17) |sum_#t~ret7|) .cse2) (and .cse0 (<= (+ |sum_#in~m| 18) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 18) .cse2) (and .cse0 (<= |sum_#in~n| 5) .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret7|) .cse2) (and .cse0 .cse1 (<= (+ |sum_#in~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| 25) |sum_#t~ret7|) .cse1 .cse2) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 14) .cse2))) [2021-02-23 17:58:42,228 INFO L185 CegarLoopUtils]: At program point L6(lines 6 10) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2021-02-23 17:58:42,228 INFO L185 CegarLoopUtils]: At program point L9-3(line 9) the Hoare annotation is: (let ((.cse29 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse2 (= sum_~m |sum_#in~m|)) (.cse3 (<= |sum_#res| .cse29)) (.cse4 (<= |sum_#t~ret7| .cse29))) (or (let ((.cse1 (+ |sum_#in~m| 1))) (and .cse0 (<= .cse1 |sum_#t~ret7|) (<= .cse1 |sum_#res|) .cse2 (<= |sum_#in~n| 1) .cse3 .cse4)) (let ((.cse5 (+ |sum_#in~m| 23))) (and .cse0 .cse2 (<= .cse5 |sum_#res|) (<= .cse5 |sum_#t~ret7|) .cse3 (<= |sum_#in~n| 23) .cse4)) (let ((.cse6 (+ |sum_#in~m| 21))) (and .cse0 (<= .cse6 |sum_#t~ret7|) .cse2 .cse3 (<= .cse6 |sum_#res|) .cse4 (<= |sum_#in~n| 21))) (let ((.cse7 (+ |sum_#in~m| 3))) (and .cse0 (<= .cse7 |sum_#t~ret7|) .cse2 (<= |sum_#in~n| 3) .cse3 (<= .cse7 |sum_#res|) .cse4)) (let ((.cse8 (+ |sum_#in~m| 16))) (and .cse0 (<= .cse8 |sum_#res|) .cse2 .cse3 (<= .cse8 |sum_#t~ret7|) (<= |sum_#in~n| 16) .cse4)) (let ((.cse9 (+ |sum_#in~m| 17))) (and .cse0 (<= |sum_#in~n| 17) .cse2 .cse3 (<= .cse9 |sum_#t~ret7|) .cse4 (<= .cse9 |sum_#res|))) (let ((.cse10 (+ |sum_#in~m| 24))) (and .cse0 (<= .cse10 |sum_#res|) (<= |sum_#in~n| 24) .cse2 .cse3 .cse4 (<= .cse10 |sum_#t~ret7|))) (let ((.cse11 (+ |sum_#in~m| 7))) (and .cse0 .cse2 (<= .cse11 |sum_#res|) (<= |sum_#in~n| 7) .cse3 (<= .cse11 |sum_#t~ret7|) .cse4)) (let ((.cse12 (+ |sum_#in~m| 19))) (and .cse0 (<= |sum_#in~n| 19) .cse2 (<= .cse12 |sum_#t~ret7|) .cse3 (<= .cse12 |sum_#res|) .cse4)) (let ((.cse13 (+ |sum_#in~m| 22))) (and .cse0 (<= .cse13 |sum_#t~ret7|) (<= |sum_#in~n| 22) .cse2 .cse3 (<= .cse13 |sum_#res|) .cse4)) (let ((.cse14 (+ |sum_#in~m| 4))) (and .cse0 (<= .cse14 |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse2 .cse3 (<= .cse14 |sum_#res|) .cse4)) (let ((.cse15 (+ |sum_#in~m| 6))) (and .cse0 (<= .cse15 |sum_#res|) .cse2 .cse3 (<= |sum_#in~n| 6) (<= .cse15 |sum_#t~ret7|) .cse4)) (let ((.cse16 (+ |sum_#in~m| 10))) (and .cse0 (<= .cse16 |sum_#res|) .cse2 .cse3 (<= .cse16 |sum_#t~ret7|) .cse4 (<= |sum_#in~n| 10))) (let ((.cse17 (+ |sum_#in~m| 5))) (and .cse0 (<= |sum_#in~n| 5) .cse2 .cse3 (<= .cse17 |sum_#t~ret7|) (<= .cse17 |sum_#res|) .cse4)) (let ((.cse18 (+ |sum_#in~m| 2))) (and .cse0 (<= .cse18 |sum_#res|) (<= |sum_#in~n| 2) .cse2 .cse3 .cse4 (<= .cse18 |sum_#t~ret7|))) (let ((.cse19 (+ |sum_#in~m| 9))) (and .cse0 .cse2 .cse3 (<= .cse19 |sum_#res|) (<= .cse19 |sum_#t~ret7|) (<= |sum_#in~n| 9) .cse4)) (let ((.cse20 (+ |sum_#in~m| 20))) (and .cse0 .cse2 .cse3 (<= |sum_#in~n| 20) (<= .cse20 |sum_#t~ret7|) (<= .cse20 |sum_#res|) .cse4)) (let ((.cse21 (+ |sum_#in~m| 18))) (and .cse0 (<= .cse21 |sum_#res|) (<= .cse21 |sum_#t~ret7|) .cse2 .cse3 (<= |sum_#in~n| 18) .cse4)) (let ((.cse22 (+ |sum_#in~m| 11))) (and .cse0 (<= .cse22 |sum_#res|) .cse2 .cse3 (<= |sum_#in~n| 11) .cse4 (<= .cse22 |sum_#t~ret7|))) (let ((.cse23 (+ |sum_#in~m| 13))) (and .cse0 .cse2 (<= .cse23 |sum_#t~ret7|) (<= |sum_#in~n| 13) .cse3 (<= .cse23 |sum_#res|) .cse4)) (let ((.cse24 (+ |sum_#in~m| 8))) (and .cse0 .cse2 (<= |sum_#in~n| 8) .cse3 (<= .cse24 |sum_#res|) (<= .cse24 |sum_#t~ret7|) .cse4)) (let ((.cse25 (+ |sum_#in~m| 12))) (and .cse0 .cse2 .cse3 (<= |sum_#in~n| 12) (<= .cse25 |sum_#t~ret7|) .cse4 (<= .cse25 |sum_#res|))) (let ((.cse26 (+ |sum_#in~m| 25))) (and .cse0 (<= .cse26 |sum_#res|) (<= .cse26 |sum_#t~ret7|) .cse2 .cse3 .cse4)) (let ((.cse27 (+ |sum_#in~m| 14))) (and .cse0 (<= .cse27 |sum_#t~ret7|) (<= .cse27 |sum_#res|) .cse2 (<= |sum_#in~n| 14) .cse3 .cse4)) (let ((.cse28 (+ |sum_#in~m| 15))) (and .cse0 (<= .cse28 |sum_#res|) .cse2 .cse3 (<= |sum_#in~n| 15) .cse4 (<= .cse28 |sum_#t~ret7|)))))) [2021-02-23 17:58:42,228 INFO L185 CegarLoopUtils]: At program point L5(lines 5 11) the Hoare annotation is: (= sum_~n |sum_#in~n|) [2021-02-23 17:58:42,229 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| 25) |sum_#res|) .cse1 .cse2) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 9) |sum_#res|) (<= |sum_#in~n| 9)) (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~n| 19) .cse1 .cse2 (<= (+ |sum_#in~m| 19) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 4) .cse1 .cse2 (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 .cse1 .cse2 (<= (+ |sum_#in~m| 21) |sum_#res|) (<= |sum_#in~n| 21)) (and .cse0 (<= (+ |sum_#in~m| 14) |sum_#res|) .cse1 (<= |sum_#in~n| 14) .cse2) (and .cse0 (<= (+ |sum_#in~m| 16) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 16)) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 12) (<= (+ |sum_#in~m| 12) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 15) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 15)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 23) |sum_#res|) .cse2 (<= |sum_#in~n| 23)) (and .cse0 (<= (+ |sum_#in~m| 11) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 11)) (and .cse0 (<= |sum_#in~n| 22) .cse1 .cse2 (<= (+ |sum_#in~m| 22) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 6)) (and .cse0 (<= |sum_#in~n| 17) .cse1 .cse2 (<= (+ |sum_#in~m| 17) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 24) |sum_#res|) (<= |sum_#in~n| 24) .cse1 .cse2) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 10)) (and .cse0 .cse1 .cse2 (<= |sum_#in~n| 20) (<= (+ |sum_#in~m| 20) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 18) |sum_#res|) .cse1 .cse2 (<= |sum_#in~n| 18)) (and .cse0 (<= (+ |sum_#in~m| 2) |sum_#res|) (<= |sum_#in~n| 2) .cse1 .cse2) (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= .cse3 |sum_#res|)) (and .cse0 .cse1 (<= |sum_#in~n| 8) .cse2 (<= (+ |sum_#in~m| 8) |sum_#res|)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7) .cse2) (and .cse0 .cse1 (<= |sum_#in~n| 13) .cse2 (<= (+ |sum_#in~m| 13) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 5) .cse1 .cse2 (<= (+ |sum_#in~m| 5) |sum_#res|))))) [2021-02-23 17:58:42,229 INFO L192 CegarLoopUtils]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2021-02-23 17:58:42,229 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) the Hoare annotation is: false [2021-02-23 17:58:42,229 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2021-02-23 17:58:42,229 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 13 20) the Hoare annotation is: (<= 25 main_~a~0) [2021-02-23 17:58:42,229 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: false [2021-02-23 17:58:42,229 INFO L185 CegarLoopUtils]: At program point L17(lines 17 19) the Hoare annotation is: (and (<= main_~a~0 main_~result~0) (<= main_~a~0 25) (<= main_~result~0 main_~a~0) (<= 25 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:58:42,229 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: false [2021-02-23 17:58:42,229 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~a~0 25) (<= 25 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:58:42,230 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (<= main_~a~0 25) (<= 25 main_~a~0)) [2021-02-23 17:58:42,230 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (and (<= |main_#t~ret8| main_~a~0) (<= main_~a~0 25) (<= main_~a~0 |main_#t~ret8|) (<= 25 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:58:42,230 INFO L185 CegarLoopUtils]: At program point L17-2(lines 13 20) the Hoare annotation is: (<= 25 main_~a~0) [2021-02-23 17:58:42,230 INFO L185 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: (and (<= |main_#t~ret8| main_~a~0) (<= main_~a~0 25) (<= main_~a~0 |main_#t~ret8|) (<= 25 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:58:42,230 INFO L185 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: (and (<= |main_#t~ret8| main_~a~0) (<= main_~a~0 main_~result~0) (<= main_~a~0 25) (<= main_~a~0 |main_#t~ret8|) (<= main_~result~0 main_~a~0) (<= 25 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:58:42,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:58:42 BoogieIcfgContainer [2021-02-23 17:58:42,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:58:42,260 INFO L168 Benchmark]: Toolchain (without parser) took 70920.47 ms. Allocated memory was 152.0 MB in the beginning and 815.8 MB in the end (delta: 663.7 MB). Free memory was 129.8 MB in the beginning and 355.2 MB in the end (delta: -225.4 MB). Peak memory consumption was 487.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:58:42,260 INFO L168 Benchmark]: CDTParser took 1.08 ms. Allocated memory is still 152.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:58:42,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.42 ms. Allocated memory is still 152.0 MB. Free memory was 128.5 MB in the beginning and 119.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:58:42,261 INFO L168 Benchmark]: Boogie Preprocessor took 34.07 ms. Allocated memory is still 152.0 MB. Free memory was 119.4 MB in the beginning and 118.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:58:42,261 INFO L168 Benchmark]: RCFGBuilder took 349.62 ms. Allocated memory is still 152.0 MB. Free memory was 118.0 MB in the beginning and 135.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:58:42,261 INFO L168 Benchmark]: TraceAbstraction took 70265.06 ms. Allocated memory was 152.0 MB in the beginning and 815.8 MB in the end (delta: 663.7 MB). Free memory was 135.2 MB in the beginning and 355.2 MB in the end (delta: -220.0 MB). Peak memory consumption was 492.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:58:42,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08 ms. Allocated memory is still 152.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.42 ms. Allocated memory is still 152.0 MB. Free memory was 128.5 MB in the beginning and 119.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.07 ms. Allocated memory is still 152.0 MB. Free memory was 119.4 MB in the beginning and 118.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 349.62 ms. Allocated memory is still 152.0 MB. Free memory was 118.0 MB in the beginning and 135.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 70265.06 ms. Allocated memory was 152.0 MB in the beginning and 815.8 MB in the end (delta: 663.7 MB). Free memory was 135.2 MB in the beginning and 355.2 MB in the end (delta: -220.0 MB). Peak memory consumption was 492.2 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) + 25 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) || ((((n == \old(n) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 9 <= \result) && \old(n) <= 9)) || ((((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(n) <= 19) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 19 <= \result)) || ((((n == \old(n) && \old(n) <= 4) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 4 <= \result)) || ((((n == \old(n) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 21 <= \result) && \old(n) <= 21)) || ((((n == \old(n) && \old(m) + 14 <= \result) && m == \old(m)) && \old(n) <= 14) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && \old(m) + 16 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 16)) || ((((n == \old(n) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 12) && \old(m) + 12 <= \result)) || ((((n == \old(n) && \old(m) + 15 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 15)) || ((((n == \old(n) && m == \old(m)) && \old(m) + 23 <= \result) && \result <= \old(n) + \old(m)) && \old(n) <= 23)) || ((((n == \old(n) && \old(m) + 11 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 11)) || ((((n == \old(n) && \old(n) <= 22) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 22 <= \result)) || ((((n == \old(n) && \old(m) + 6 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 6)) || ((((n == \old(n) && \old(n) <= 17) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 17 <= \result)) || ((((n == \old(n) && \old(m) + 24 <= \result) && \old(n) <= 24) && m == \old(m)) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && \old(m) + 10 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 10)) || ((((n == \old(n) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 20) && \old(m) + 20 <= \result)) || ((((n == \old(n) && \old(m) + 18 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 18)) || ((((n == \old(n) && \old(m) + 2 <= \result) && \old(n) <= 2) && m == \old(m)) && \result <= \old(n) + \old(m))) || (((n == \old(n) && \result <= \old(m)) && m == \old(m)) && \old(n) + \old(m) <= \result)) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 8) && \result <= \old(n) + \old(m)) && \old(m) + 8 <= \result)) || ((((n == \old(n) && m == \old(m)) && \old(m) + 7 <= \result) && \old(n) <= 7) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 13) && \result <= \old(n) + \old(m)) && \old(m) + 13 <= \result)) || ((((n == \old(n) && \old(n) <= 5) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 5 <= \result) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 25 <= a - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 61.5s, OverallIterations: 26, TraceHistogramMax: 26, AutomataDifference: 36.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 723 SDtfs, 3274 SDslu, 1925 SDs, 0 SdLazy, 6017 SolverSat, 915 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1724 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 945 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9232 ImplicationChecksByTransitivity, 34.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 26 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 46 PreInvPairs, 421 NumberOfFragments, 2942 HoareAnnotationTreeSize, 46 FomulaSimplifications, 7520 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 36 FomulaSimplificationsInter, 10160 FormulaSimplificationTreeSizeReductionInter, 7.6s 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...