/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 06:45:48,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 06:45:48,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 06:45:48,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 06:45:48,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 06:45:48,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 06:45:48,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 06:45:48,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 06:45:48,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 06:45:48,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 06:45:48,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 06:45:48,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 06:45:48,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 06:45:48,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 06:45:48,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 06:45:48,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 06:45:48,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 06:45:48,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 06:45:48,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 06:45:48,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 06:45:48,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 06:45:48,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 06:45:48,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 06:45:48,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 06:45:48,326 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 06:45:48,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 06:45:48,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 06:45:48,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 06:45:48,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 06:45:48,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 06:45:48,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 06:45:48,327 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 06:45:48,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 06:45:48,327 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 06:45:48,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 06:45:48,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 06:45:48,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 06:45:48,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 06:45:48,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 06:45:48,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:45:48,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 06:45:48,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 06:45:48,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 06:45:48,329 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 06:45:48,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 06:45:48,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 06:45:48,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 06:45:48,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 06:45:48,692 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 06:45:48,693 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 06:45:48,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2021-04-16 06:45:48,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ad3aad2/d64ca1847a554a1ebd4672b85acb03f7/FLAG27b55c056 [2021-04-16 06:45:49,137 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 06:45:49,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i [2021-04-16 06:45:49,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ad3aad2/d64ca1847a554a1ebd4672b85acb03f7/FLAG27b55c056 [2021-04-16 06:45:49,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ad3aad2/d64ca1847a554a1ebd4672b85acb03f7 [2021-04-16 06:45:49,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 06:45:49,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 06:45:49,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 06:45:49,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 06:45:49,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 06:45:49,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:45:49" (1/1) ... [2021-04-16 06:45:49,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca5dc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49, skipping insertion in model container [2021-04-16 06:45:49,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:45:49" (1/1) ... [2021-04-16 06:45:49,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 06:45:49,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 06:45:49,657 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i[808,821] [2021-04-16 06:45:49,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:45:49,691 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 06:45:49,704 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i[808,821] [2021-04-16 06:45:49,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:45:49,721 INFO L208 MainTranslator]: Completed translation [2021-04-16 06:45:49,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49 WrapperNode [2021-04-16 06:45:49,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 06:45:49,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 06:45:49,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 06:45:49,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 06:45:49,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49" (1/1) ... [2021-04-16 06:45:49,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49" (1/1) ... [2021-04-16 06:45:49,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49" (1/1) ... [2021-04-16 06:45:49,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49" (1/1) ... [2021-04-16 06:45:49,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49" (1/1) ... [2021-04-16 06:45:49,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49" (1/1) ... [2021-04-16 06:45:49,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49" (1/1) ... [2021-04-16 06:45:49,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 06:45:49,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 06:45:49,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 06:45:49,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 06:45:49,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49" (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 [2021-04-16 06:45:49,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 06:45:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 06:45:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 06:45:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 06:45:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 06:45:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 06:45:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 06:45:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 06:45:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 06:45:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 06:45:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 06:45:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 06:45:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 06:45:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 06:45:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 06:45:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 06:45:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 06:45:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 06:45:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 06:45:50,104 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 06:45:50,105 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 06:45:50,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:45:50 BoogieIcfgContainer [2021-04-16 06:45:50,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 06:45:50,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 06:45:50,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 06:45:50,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 06:45:50,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 06:45:49" (1/3) ... [2021-04-16 06:45:50,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229de67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:45:50, skipping insertion in model container [2021-04-16 06:45:50,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:49" (2/3) ... [2021-04-16 06:45:50,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229de67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:45:50, skipping insertion in model container [2021-04-16 06:45:50,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:45:50" (3/3) ... [2021-04-16 06:45:50,115 INFO L111 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2021-04-16 06:45:50,119 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 06:45:50,122 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 06:45:50,140 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 06:45:50,168 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 06:45:50,168 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 06:45:50,168 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 06:45:50,168 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 06:45:50,168 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 06:45:50,168 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 06:45:50,168 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 06:45:50,168 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 06:45:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:45:50,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 06:45:50,186 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:50,187 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:50,187 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:50,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:50,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1466806487, now seen corresponding path program 1 times [2021-04-16 06:45:50,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:50,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266336472] [2021-04-16 06:45:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:50,252 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:50,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:50,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:50,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:50,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:50,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266336472] [2021-04-16 06:45:50,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:50,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 06:45:50,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96820995] [2021-04-16 06:45:50,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 06:45:50,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 06:45:50,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:45:50,453 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:50,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:50,523 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-04-16 06:45:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 06:45:50,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 06:45:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:50,531 INFO L225 Difference]: With dead ends: 31 [2021-04-16 06:45:50,531 INFO L226 Difference]: Without dead ends: 14 [2021-04-16 06:45:50,534 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:45:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-04-16 06:45:50,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-04-16 06:45:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-04-16 06:45:50,572 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-04-16 06:45:50,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:50,573 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-04-16 06:45:50,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:50,573 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-04-16 06:45:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 06:45:50,574 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:50,574 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:50,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 06:45:50,575 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:50,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:50,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1456647756, now seen corresponding path program 1 times [2021-04-16 06:45:50,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:50,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841324363] [2021-04-16 06:45:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:50,583 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:50,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:50,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:50,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:50,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:50,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841324363] [2021-04-16 06:45:50,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:50,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 06:45:50,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045080573] [2021-04-16 06:45:50,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 06:45:50,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:50,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 06:45:50,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 06:45:50,716 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:50,831 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-04-16 06:45:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 06:45:50,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 06:45:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:50,832 INFO L225 Difference]: With dead ends: 25 [2021-04-16 06:45:50,832 INFO L226 Difference]: Without dead ends: 17 [2021-04-16 06:45:50,833 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:45:50,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-04-16 06:45:50,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-04-16 06:45:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-04-16 06:45:50,839 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2021-04-16 06:45:50,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:50,840 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-04-16 06:45:50,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:50,840 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-04-16 06:45:50,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 06:45:50,840 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:50,841 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:50,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 06:45:50,841 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:50,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:50,842 INFO L82 PathProgramCache]: Analyzing trace with hash 193151625, now seen corresponding path program 1 times [2021-04-16 06:45:50,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:50,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793257955] [2021-04-16 06:45:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:50,872 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-04-16 06:45:50,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:50,883 INFO L175 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_11 4) InVars {main_~i~0=v_main_~i~0_11} OutVars{main_~i~0=v_main_~i~0_11} AuxVars[] AssignedVars[] [2021-04-16 06:45:50,894 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size [2021-04-16 06:45:50,902 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,934 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,938 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:50,942 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:50,952 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,955 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:50,968 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,970 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,974 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,978 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,982 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,990 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,992 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:50,997 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,004 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size 57 [2021-04-16 06:45:51,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:51,037 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 06:45:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:51,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:51,098 INFO L142 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-04-16 06:45:51,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,101 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-04-16 06:45:51,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:51,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:51,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:51,160 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:45:51,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:45:51,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:51,194 INFO L142 QuantifierPusher]: treesize reduction 11, result has 47.6 percent of original size [2021-04-16 06:45:51,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,202 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-04-16 06:45:51,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:51,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793257955] [2021-04-16 06:45:51,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:51,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:45:51,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747207351] [2021-04-16 06:45:51,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:45:51,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:51,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:45:51,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:45:51,205 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:51,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:51,288 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-04-16 06:45:51,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:45:51,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-16 06:45:51,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:51,289 INFO L225 Difference]: With dead ends: 28 [2021-04-16 06:45:51,289 INFO L226 Difference]: Without dead ends: 20 [2021-04-16 06:45:51,289 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:45:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-04-16 06:45:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-04-16 06:45:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-04-16 06:45:51,295 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2021-04-16 06:45:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:51,295 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-04-16 06:45:51,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-04-16 06:45:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-16 06:45:51,296 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:51,296 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:51,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 06:45:51,297 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:51,297 INFO L82 PathProgramCache]: Analyzing trace with hash 473295148, now seen corresponding path program 2 times [2021-04-16 06:45:51,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:51,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364554079] [2021-04-16 06:45:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:51,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,308 INFO L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-04-16 06:45:51,308 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_17 4) (<= v_main_~i~0_17 7)) InVars {main_~i~0=v_main_~i~0_17} OutVars{main_~i~0=v_main_~i~0_17} AuxVars[] AssignedVars[] [2021-04-16 06:45:51,314 WARN L240 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size [2021-04-16 06:45:51,317 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,321 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,324 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,325 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:51,328 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,332 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,335 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,338 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,341 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,344 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,346 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,348 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,350 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,352 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,354 WARN L245 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size 57 [2021-04-16 06:45:51,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:51,371 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 06:45:51,374 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-04-16 06:45:51,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,376 INFO L175 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_19 4) InVars {main_~i~0=v_main_~i~0_19} OutVars{main_~i~0=v_main_~i~0_19} AuxVars[] AssignedVars[] [2021-04-16 06:45:51,380 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size [2021-04-16 06:45:51,382 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,385 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,388 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,389 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:51,392 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,395 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,397 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,399 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,402 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,405 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,407 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,409 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,412 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,418 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,419 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size 57 [2021-04-16 06:45:51,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:51,435 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 06:45:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:51,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:51,453 INFO L142 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-04-16 06:45:51,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,456 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-04-16 06:45:51,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:51,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:51,491 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-04-16 06:45:51,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 06:45:51,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:51,523 INFO L142 QuantifierPusher]: treesize reduction 11, result has 47.6 percent of original size [2021-04-16 06:45:51,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:51,531 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:51,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,532 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:51,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,542 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-04-16 06:45:51,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:51,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364554079] [2021-04-16 06:45:51,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:51,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 06:45:51,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082302922] [2021-04-16 06:45:51,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 06:45:51,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:51,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 06:45:51,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:45:51,546 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:51,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:51,716 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-04-16 06:45:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:45:51,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-04-16 06:45:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:51,720 INFO L225 Difference]: With dead ends: 37 [2021-04-16 06:45:51,720 INFO L226 Difference]: Without dead ends: 29 [2021-04-16 06:45:51,722 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:45:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-04-16 06:45:51,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-04-16 06:45:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-04-16 06:45:51,734 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 17 [2021-04-16 06:45:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:51,735 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-04-16 06:45:51,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-04-16 06:45:51,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-16 06:45:51,735 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:51,736 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:51,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-16 06:45:51,736 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:51,736 INFO L82 PathProgramCache]: Analyzing trace with hash -402263410, now seen corresponding path program 1 times [2021-04-16 06:45:51,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:51,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965978210] [2021-04-16 06:45:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:51,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,755 INFO L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-04-16 06:45:51,755 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_28 4) (<= v_main_~i~0_28 7)) InVars {main_~i~0=v_main_~i~0_28} OutVars{main_~i~0=v_main_~i~0_28} AuxVars[] AssignedVars[] [2021-04-16 06:45:51,768 WARN L240 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size [2021-04-16 06:45:51,777 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,780 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,783 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,785 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,790 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,792 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,801 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,804 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,805 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:51,807 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,811 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,813 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,815 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,817 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,818 WARN L245 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size 57 [2021-04-16 06:45:51,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:51,835 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 06:45:51,837 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-04-16 06:45:51,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:51,838 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= v_main_~i~0_30 8) (<= 4 v_main_~i~0_30)) InVars {main_~i~0=v_main_~i~0_30} OutVars{main_~i~0=v_main_~i~0_30} AuxVars[] AssignedVars[] [2021-04-16 06:45:51,844 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size [2021-04-16 06:45:51,849 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,856 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 06:45:51,861 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,863 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,869 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,874 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,879 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,880 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,881 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:51,886 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,889 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:51,892 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,894 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,899 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,902 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,907 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,910 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,913 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,915 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,917 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,919 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,923 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,924 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size 50 [2021-04-16 06:45:51,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:51,945 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-04-16 06:45:51,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:51,947 INFO L175 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_32 4) InVars {main_~i~0=v_main_~i~0_32} OutVars{main_~i~0=v_main_~i~0_32} AuxVars[] AssignedVars[] [2021-04-16 06:45:51,951 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size [2021-04-16 06:45:51,954 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,956 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,959 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,964 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,967 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,969 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,973 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,978 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,979 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:51,982 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:51,986 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,989 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,991 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,993 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:51,996 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size 57 [2021-04-16 06:45:52,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:52,029 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-04-16 06:45:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:52,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:52,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:52,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,070 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:52,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:52,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:52,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:52,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:52,107 INFO L142 QuantifierPusher]: treesize reduction 29, result has 27.5 percent of original size [2021-04-16 06:45:52,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 06:45:52,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:52,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:45:52,123 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:52,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,125 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:52,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:52,132 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:52,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,133 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:52,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:52,142 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:52,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,154 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:52,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:52,170 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:52,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,180 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-04-16 06:45:52,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,195 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-04-16 06:45:52,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:52,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965978210] [2021-04-16 06:45:52,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:52,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:45:52,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96738085] [2021-04-16 06:45:52,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:45:52,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:45:52,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-04-16 06:45:52,198 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:52,381 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-04-16 06:45:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 06:45:52,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-04-16 06:45:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:52,384 INFO L225 Difference]: With dead ends: 46 [2021-04-16 06:45:52,384 INFO L226 Difference]: Without dead ends: 29 [2021-04-16 06:45:52,385 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 165.0ms TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:45:52,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-04-16 06:45:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-04-16 06:45:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-04-16 06:45:52,398 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 23 [2021-04-16 06:45:52,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:52,398 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-04-16 06:45:52,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-04-16 06:45:52,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-04-16 06:45:52,399 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:52,399 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:52,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-16 06:45:52,399 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1841039991, now seen corresponding path program 2 times [2021-04-16 06:45:52,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:52,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204565803] [2021-04-16 06:45:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:52,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,415 INFO L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-04-16 06:45:52,416 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_46 4) (<= v_main_~i~0_46 7)) InVars {main_~i~0=v_main_~i~0_46} OutVars{main_~i~0=v_main_~i~0_46} AuxVars[] AssignedVars[] [2021-04-16 06:45:52,420 WARN L240 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size [2021-04-16 06:45:52,421 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,425 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,428 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,429 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:52,432 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,438 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,441 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,443 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,445 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,447 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,449 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,451 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,453 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,455 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,457 WARN L245 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size 57 [2021-04-16 06:45:52,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:52,475 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-04-16 06:45:52,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,477 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= v_main_~i~0_48 7) (<= 4 v_main_~i~0_48)) InVars {main_~i~0=v_main_~i~0_48} OutVars{main_~i~0=v_main_~i~0_48} AuxVars[] AssignedVars[] [2021-04-16 06:45:52,479 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size [2021-04-16 06:45:52,483 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,492 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,497 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,500 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,502 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,504 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,507 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 06:45:52,508 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,509 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,513 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,514 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,517 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,520 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,521 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:52,523 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,525 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:52,527 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,530 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,532 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,535 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,537 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,539 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,540 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size 50 [2021-04-16 06:45:52,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:52,557 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-04-16 06:45:52,559 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-04-16 06:45:52,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,561 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= 4 v_main_~i~0_50) (<= v_main_~i~0_50 8)) InVars {main_~i~0=v_main_~i~0_50} OutVars{main_~i~0=v_main_~i~0_50} AuxVars[] AssignedVars[] [2021-04-16 06:45:52,564 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size [2021-04-16 06:45:52,569 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,594 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,597 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,599 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,602 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,603 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,604 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 06:45:52,605 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,606 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,610 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,611 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,614 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,617 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,618 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:52,620 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,620 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:52,622 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,625 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,627 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,629 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,630 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,632 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,633 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size 50 [2021-04-16 06:45:52,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:52,651 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-04-16 06:45:52,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,652 INFO L175 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_52 4) InVars {main_~i~0=v_main_~i~0_52} OutVars{main_~i~0=v_main_~i~0_52} AuxVars[] AssignedVars[] [2021-04-16 06:45:52,654 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size [2021-04-16 06:45:52,656 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,659 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,662 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,662 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:52,665 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:52,667 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,669 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,671 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,674 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,676 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,682 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,684 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,686 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,688 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,689 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size 57 [2021-04-16 06:45:52,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:52,709 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-04-16 06:45:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:52,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:52,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:52,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:52,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:52,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:52,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:52,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 06:45:52,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:52,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 06:45:52,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:45:52,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-04-16 06:45:52,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,819 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-16 06:45:52,820 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-04-16 06:45:52,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,845 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-04-16 06:45:52,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,854 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-16 06:45:52,855 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-04-16 06:45:52,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,878 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-04-16 06:45:52,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,888 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-16 06:45:52,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,916 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-04-16 06:45:52,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:52,917 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-04-16 06:45:52,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:52,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:52,945 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:52,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:52,946 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-04-16 06:45:52,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:52,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:52,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:52,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:52,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204565803] [2021-04-16 06:45:52,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:52,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-04-16 06:45:52,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582898146] [2021-04-16 06:45:52,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-04-16 06:45:52,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:52,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-04-16 06:45:52,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-04-16 06:45:52,971 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 14 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:53,413 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-04-16 06:45:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-16 06:45:53,414 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 14 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-04-16 06:45:53,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:53,416 INFO L225 Difference]: With dead ends: 40 [2021-04-16 06:45:53,416 INFO L226 Difference]: Without dead ends: 32 [2021-04-16 06:45:53,418 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 421.3ms TimeCoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2021-04-16 06:45:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-04-16 06:45:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-04-16 06:45:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-04-16 06:45:53,438 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 26 [2021-04-16 06:45:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:53,438 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-04-16 06:45:53,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 14 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-04-16 06:45:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-04-16 06:45:53,441 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:53,441 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:53,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-16 06:45:53,442 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:53,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:53,442 INFO L82 PathProgramCache]: Analyzing trace with hash -660550482, now seen corresponding path program 3 times [2021-04-16 06:45:53,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:53,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367161947] [2021-04-16 06:45:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:53,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,455 INFO L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-04-16 06:45:53,455 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= v_main_~i~0_69 7) (< v_main_~i~0_69 4)) InVars {main_~i~0=v_main_~i~0_69} OutVars{main_~i~0=v_main_~i~0_69} AuxVars[] AssignedVars[] [2021-04-16 06:45:53,458 WARN L240 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size [2021-04-16 06:45:53,461 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,463 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,465 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,467 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,470 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,471 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,476 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,479 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,479 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:53,483 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,485 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,487 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,489 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,491 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,492 WARN L245 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size 57 [2021-04-16 06:45:53,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:53,512 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-04-16 06:45:53,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:53,513 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= v_main_~i~0_71 7) (<= 4 v_main_~i~0_71)) InVars {main_~i~0=v_main_~i~0_71} OutVars{main_~i~0=v_main_~i~0_71} AuxVars[] AssignedVars[] [2021-04-16 06:45:53,515 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size [2021-04-16 06:45:53,519 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,522 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,525 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,528 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,530 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,531 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,533 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 06:45:53,535 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,536 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,540 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,541 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,545 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,548 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,549 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:53,551 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,551 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:53,554 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,556 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,558 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,560 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,562 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,564 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,567 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size 50 [2021-04-16 06:45:53,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:53,585 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-04-16 06:45:53,587 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-04-16 06:45:53,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:53,588 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= v_main_~i~0_73 8) (<= 4 v_main_~i~0_73)) InVars {main_~i~0=v_main_~i~0_73} OutVars{main_~i~0=v_main_~i~0_73} AuxVars[] AssignedVars[] [2021-04-16 06:45:53,590 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size [2021-04-16 06:45:53,594 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,599 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,602 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,605 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,608 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,609 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,611 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 06:45:53,615 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,616 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,621 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,624 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,627 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,628 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,629 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:53,631 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,631 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:53,633 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,636 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,641 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,643 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,645 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,647 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,648 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size 50 [2021-04-16 06:45:53,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:53,665 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-04-16 06:45:53,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,666 INFO L175 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_75 4) InVars {main_~i~0=v_main_~i~0_75} OutVars{main_~i~0=v_main_~i~0_75} AuxVars[] AssignedVars[] [2021-04-16 06:45:53,668 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size [2021-04-16 06:45:53,670 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,678 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,681 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,682 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:53,686 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,688 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,690 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,692 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:53,695 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,697 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,699 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,701 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,703 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,705 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,706 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size 57 [2021-04-16 06:45:53,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:53,728 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-04-16 06:45:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:53,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:53,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:53,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,778 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:53,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:53,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:53,804 INFO L142 QuantifierPusher]: treesize reduction 29, result has 27.5 percent of original size [2021-04-16 06:45:53,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 06:45:53,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:53,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:45:53,815 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:53,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,816 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:53,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:53,822 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:53,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,823 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:53,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,831 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:53,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,832 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:53,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,840 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:53,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,841 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-04-16 06:45:53,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,848 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:53,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,849 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-04-16 06:45:53,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,857 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:53,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,858 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-04-16 06:45:53,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:53,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:53,867 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-04-16 06:45:53,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:53,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367161947] [2021-04-16 06:45:53,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:53,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-16 06:45:53,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552110218] [2021-04-16 06:45:53,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 06:45:53,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:53,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 06:45:53,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:45:53,869 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:54,113 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-04-16 06:45:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:45:54,113 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-04-16 06:45:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:54,115 INFO L225 Difference]: With dead ends: 43 [2021-04-16 06:45:54,115 INFO L226 Difference]: Without dead ends: 35 [2021-04-16 06:45:54,115 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 186.2ms TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-04-16 06:45:54,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-04-16 06:45:54,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-04-16 06:45:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:54,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-04-16 06:45:54,124 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 29 [2021-04-16 06:45:54,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:54,124 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-04-16 06:45:54,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:54,124 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-04-16 06:45:54,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-04-16 06:45:54,125 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:54,125 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:54,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-16 06:45:54,125 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:54,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:54,126 INFO L82 PathProgramCache]: Analyzing trace with hash 110192489, now seen corresponding path program 4 times [2021-04-16 06:45:54,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:54,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039363789] [2021-04-16 06:45:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:54,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,134 INFO L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-04-16 06:45:54,135 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_93 4) (<= v_main_~i~0_93 7)) InVars {main_~i~0=v_main_~i~0_93} OutVars{main_~i~0=v_main_~i~0_93} AuxVars[] AssignedVars[] [2021-04-16 06:45:54,137 WARN L240 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size [2021-04-16 06:45:54,138 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,142 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,144 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,144 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:54,147 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,150 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,153 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,155 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,157 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,160 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,162 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,164 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,165 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,167 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,168 WARN L245 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size 57 [2021-04-16 06:45:54,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:54,183 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-04-16 06:45:54,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:54,187 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= 4 v_main_~i~0_95) (<= v_main_~i~0_95 7)) InVars {main_~i~0=v_main_~i~0_95} OutVars{main_~i~0=v_main_~i~0_95} AuxVars[] AssignedVars[] [2021-04-16 06:45:54,188 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size [2021-04-16 06:45:54,191 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,192 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 06:45:54,193 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,194 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,198 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,200 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,204 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,205 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,206 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:54,207 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,208 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:54,210 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,212 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,215 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,216 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,227 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,229 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,232 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,234 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,235 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,237 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,238 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,239 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-04-16 06:45:54,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:54,255 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-04-16 06:45:54,256 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-04-16 06:45:54,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:54,258 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= v_main_~i~0_97 8) (<= 4 v_main_~i~0_97)) InVars {main_~i~0=v_main_~i~0_97} OutVars{main_~i~0=v_main_~i~0_97} AuxVars[] AssignedVars[] [2021-04-16 06:45:54,259 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size [2021-04-16 06:45:54,260 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,262 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 06:45:54,263 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,264 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,268 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,269 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,272 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,275 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,275 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:54,277 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,278 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:54,280 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,287 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,289 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,292 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,294 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,295 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,297 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,299 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,301 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,303 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,305 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,305 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size 50 [2021-04-16 06:45:54,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:54,322 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-04-16 06:45:54,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,324 INFO L175 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_99 4) InVars {main_~i~0=v_main_~i~0_99} OutVars{main_~i~0=v_main_~i~0_99} AuxVars[] AssignedVars[] [2021-04-16 06:45:54,326 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size [2021-04-16 06:45:54,326 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,331 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,333 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,333 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:54,336 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,338 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,341 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,343 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,345 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,347 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,349 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,351 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,352 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,354 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,355 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size 57 [2021-04-16 06:45:54,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:54,370 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-04-16 06:45:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:54,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:54,402 INFO L142 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-04-16 06:45:54,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,405 INFO L142 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-04-16 06:45:54,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,405 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:54,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:54,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:54,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:54,444 INFO L142 QuantifierPusher]: treesize reduction 29, result has 27.5 percent of original size [2021-04-16 06:45:54,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 06:45:54,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-04-16 06:45:54,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-04-16 06:45:54,457 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:54,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,458 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:54,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:54,464 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:54,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,465 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:54,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:54,472 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:54,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,477 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:54,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:54,490 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:54,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,497 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-04-16 06:45:54,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,510 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:54,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,511 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-04-16 06:45:54,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:54,519 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:54,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,525 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-04-16 06:45:54,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 06:45:54,540 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-04-16 06:45:54,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,541 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-04-16 06:45:54,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:54,551 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-04-16 06:45:54,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:54,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039363789] [2021-04-16 06:45:54,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:54,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-16 06:45:54,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988631979] [2021-04-16 06:45:54,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 06:45:54,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:54,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 06:45:54,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-04-16 06:45:54,553 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:54,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:54,864 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-04-16 06:45:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 06:45:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-04-16 06:45:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:54,869 INFO L225 Difference]: With dead ends: 46 [2021-04-16 06:45:54,869 INFO L226 Difference]: Without dead ends: 38 [2021-04-16 06:45:54,869 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 263.6ms TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-04-16 06:45:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-04-16 06:45:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-04-16 06:45:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-04-16 06:45:54,877 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32 [2021-04-16 06:45:54,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:54,877 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-04-16 06:45:54,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-04-16 06:45:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-04-16 06:45:54,880 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:54,880 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:54,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-04-16 06:45:54,881 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:54,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:54,881 INFO L82 PathProgramCache]: Analyzing trace with hash 418877134, now seen corresponding path program 5 times [2021-04-16 06:45:54,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:54,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10792924] [2021-04-16 06:45:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:54,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,889 INFO L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-04-16 06:45:54,890 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= v_main_~i~0_118 7) (< v_main_~i~0_118 4)) InVars {main_~i~0=v_main_~i~0_118} OutVars{main_~i~0=v_main_~i~0_118} AuxVars[] AssignedVars[] [2021-04-16 06:45:54,892 WARN L240 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size [2021-04-16 06:45:54,895 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,897 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,899 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,901 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,904 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,905 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,907 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,910 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,910 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:54,913 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,914 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,916 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,918 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,920 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,921 WARN L245 tifierPushTermWalker]: treesize reduction 25, result has 69.5 percent of original size 57 [2021-04-16 06:45:54,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:54,937 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-04-16 06:45:54,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:54,939 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= 4 v_main_~i~0_120) (<= v_main_~i~0_120 7)) InVars {main_~i~0=v_main_~i~0_120} OutVars{main_~i~0=v_main_~i~0_120} AuxVars[] AssignedVars[] [2021-04-16 06:45:54,941 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size [2021-04-16 06:45:54,948 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,950 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,952 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,955 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,957 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,957 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,958 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 06:45:54,960 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,960 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,963 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,964 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,968 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,970 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,970 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:54,972 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,973 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:54,974 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,977 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,979 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,981 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,982 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:54,984 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:54,985 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size 50 [2021-04-16 06:45:55,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:55,008 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-04-16 06:45:55,009 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-04-16 06:45:55,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,010 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (<= 4 v_main_~i~0_122) (<= v_main_~i~0_122 8)) InVars {main_~i~0=v_main_~i~0_122} OutVars{main_~i~0=v_main_~i~0_122} AuxVars[] AssignedVars[] [2021-04-16 06:45:55,011 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size [2021-04-16 06:45:55,012 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,014 INFO L725 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-04-16 06:45:55,015 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,016 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,020 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:55,023 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,025 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:55,026 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:55,027 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-16 06:45:55,029 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,029 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 06:45:55,033 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:55,035 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,037 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,038 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:55,040 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,042 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,044 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,046 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,048 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,049 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,051 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,051 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.7 percent of original size 50 [2021-04-16 06:45:55,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-16 06:45:55,067 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-04-16 06:45:55,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:55,070 INFO L175 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_124 4) InVars {main_~i~0=v_main_~i~0_124} OutVars{main_~i~0=v_main_~i~0_124} AuxVars[] AssignedVars[] [2021-04-16 06:45:55,071 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size [2021-04-16 06:45:55,072 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,076 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:55,078 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,078 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 06:45:55,082 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,083 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:55,085 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,087 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,090 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,092 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,094 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,095 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,097 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,099 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,100 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.4 percent of original size 57 [2021-04-16 06:45:55,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-16 06:45:55,114 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-04-16 06:45:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:55,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:55,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:55,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:55,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:55,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:45:55,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:55,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:55,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 06:45:55,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:55,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 06:45:55,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-16 06:45:55,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-04-16 06:45:55,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,212 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-16 06:45:55,213 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-04-16 06:45:55,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,232 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-04-16 06:45:55,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,241 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-16 06:45:55,241 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-04-16 06:45:55,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,263 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-04-16 06:45:55,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,273 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-16 06:45:55,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,296 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-04-16 06:45:55,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,297 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-04-16 06:45:55,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:55,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:55,327 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:55,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:55,330 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-04-16 06:45:55,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:55,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:55,344 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:55,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:55,344 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:55,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:55,381 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-04-16 06:45:55,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:55,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:55,397 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-04-16 06:45:55,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:45:55,414 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 06:45:55,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:55,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:55,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:55,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10792924] [2021-04-16 06:45:55,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:55,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-04-16 06:45:55,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056478801] [2021-04-16 06:45:55,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-04-16 06:45:55,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:55,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-04-16 06:45:55,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2021-04-16 06:45:55,457 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:56,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:56,040 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-04-16 06:45:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-16 06:45:56,041 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-04-16 06:45:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:56,042 INFO L225 Difference]: With dead ends: 39 [2021-04-16 06:45:56,042 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 06:45:56,043 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 604.9ms TimeCoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2021-04-16 06:45:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 06:45:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 06:45:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-16 06:45:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 06:45:56,044 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-04-16 06:45:56,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:56,044 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 06:45:56,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 06:45:56,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 06:45:56,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-04-16 06:45:56,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 06:45:56,316 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 32 [2021-04-16 06:45:56,499 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2021-04-16 06:45:56,663 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2021-04-16 06:45:56,665 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-04-16 06:45:56,665 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-04-16 06:45:56,665 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-04-16 06:45:56,666 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-04-16 06:45:56,666 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-04-16 06:45:56,666 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-04-16 06:45:56,666 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-04-16 06:45:56,666 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-16 06:45:56,666 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 06:45:56,666 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-04-16 06:45:56,666 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2021-04-16 06:45:56,666 INFO L194 CegarLoopUtils]: At program point L25(lines 25 26) the Hoare annotation is: (let ((.cse0 (= 6 main_~sn~0))) (or (and (= main_~i~0 8) .cse0) (and (= main_~i~0 4) .cse0) (and (= main_~sn~0 4) (= main_~i~0 3)) (and (= 7 main_~i~0) .cse0) (and (= main_~i~0 2) (= 2 main_~sn~0)) (and (= main_~sn~0 0) (= main_~i~0 1)) (and (= 5 main_~i~0) .cse0) (and (= main_~i~0 6) .cse0))) [2021-04-16 06:45:56,666 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 22 29) the Hoare annotation is: true [2021-04-16 06:45:56,666 INFO L194 CegarLoopUtils]: At program point L24-2(lines 24 27) the Hoare annotation is: (let ((.cse0 (= 6 main_~sn~0))) (or (and (< main_~i~0 5) (<= 4 main_~i~0) .cse0) (and (= 7 main_~i~0) .cse0) (and (<= main_~i~0 8) (<= 8 main_~i~0) .cse0) (and (= main_~i~0 1) (= 2 main_~sn~0)) (and (= main_~sn~0 4) (= main_~i~0 2)) (and .cse0 (= main_~i~0 3)) (and (= 5 main_~i~0) .cse0) (and (= main_~i~0 6) .cse0))) [2021-04-16 06:45:56,667 INFO L194 CegarLoopUtils]: At program point L24-3(lines 24 27) the Hoare annotation is: (let ((.cse0 (= 6 main_~sn~0))) (or (and (<= 9 main_~i~0) (<= main_~i~0 9) .cse0) (and (= main_~i~0 8) .cse0) (and (= main_~i~0 4) .cse0) (and (= main_~sn~0 4) (= main_~i~0 3)) (and (= 7 main_~i~0) .cse0) (and (= main_~i~0 2) (= 2 main_~sn~0)) (and (= main_~sn~0 0) (= main_~i~0 1)) (and (= 5 main_~i~0) .cse0) (and (= main_~i~0 6) .cse0))) [2021-04-16 06:45:56,667 INFO L194 CegarLoopUtils]: At program point L24-4(lines 24 27) the Hoare annotation is: false [2021-04-16 06:45:56,667 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 22 29) the Hoare annotation is: true [2021-04-16 06:45:56,667 INFO L201 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-04-16 06:45:56,667 INFO L201 CegarLoopUtils]: At program point L15(lines 15 17) the Hoare annotation is: true [2021-04-16 06:45:56,667 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2021-04-16 06:45:56,667 INFO L201 CegarLoopUtils]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2021-04-16 06:45:56,667 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: true [2021-04-16 06:45:56,667 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: true [2021-04-16 06:45:56,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 06:45:56 BoogieIcfgContainer [2021-04-16 06:45:56,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 06:45:56,685 INFO L168 Benchmark]: Toolchain (without parser) took 7139.30 ms. Allocated memory was 210.8 MB in the beginning and 257.9 MB in the end (delta: 47.2 MB). Free memory was 176.6 MB in the beginning and 186.1 MB in the end (delta: -9.5 MB). Peak memory consumption was 133.1 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:56,685 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 210.8 MB. Free memory was 193.5 MB in the beginning and 193.3 MB in the end (delta: 113.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 06:45:56,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.72 ms. Allocated memory is still 210.8 MB. Free memory was 176.4 MB in the beginning and 167.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:56,685 INFO L168 Benchmark]: Boogie Preprocessor took 62.50 ms. Allocated memory is still 210.8 MB. Free memory was 167.1 MB in the beginning and 193.9 MB in the end (delta: -26.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:56,686 INFO L168 Benchmark]: RCFGBuilder took 319.43 ms. Allocated memory is still 210.8 MB. Free memory was 193.8 MB in the beginning and 180.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:56,686 INFO L168 Benchmark]: TraceAbstraction took 6576.79 ms. Allocated memory was 210.8 MB in the beginning and 257.9 MB in the end (delta: 47.2 MB). Free memory was 180.7 MB in the beginning and 186.1 MB in the end (delta: -5.4 MB). Peak memory consumption was 137.2 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:56,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 210.8 MB. Free memory was 193.5 MB in the beginning and 193.3 MB in the end (delta: 113.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 175.72 ms. Allocated memory is still 210.8 MB. Free memory was 176.4 MB in the beginning and 167.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.50 ms. Allocated memory is still 210.8 MB. Free memory was 167.1 MB in the beginning and 193.9 MB in the end (delta: -26.7 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 319.43 ms. Allocated memory is still 210.8 MB. Free memory was 193.8 MB in the beginning and 180.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6576.79 ms. Allocated memory was 210.8 MB in the beginning and 257.9 MB in the end (delta: 47.2 MB). Free memory was 180.7 MB in the beginning and 186.1 MB in the end (delta: -5.4 MB). Peak memory consumption was 137.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5879.1ms, OverallIterations: 9, TraceHistogramMax: 8, EmptinessCheckTime: 15.9ms, AutomataDifference: 2260.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 619.9ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 96 SDtfs, 188 SDslu, 270 SDs, 0 SdLazy, 1303 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 657.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 240 GetRequests, 93 SyntacticMatches, 17 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1982.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=8, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 99.7ms AutomataMinimizationTime, 9 MinimizatonAttempts, 10 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 20 LocationsWithAnnotation, 68 PreInvPairs, 113 NumberOfFragments, 228 HoareAnnotationTreeSize, 68 FomulaSimplifications, 14050 FormulaSimplificationTreeSizeReduction, 119.2ms HoareSimplificationTime, 20 FomulaSimplificationsInter, 788 FormulaSimplificationTreeSizeReductionInter, 490.8ms 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((((((((9 <= i && i <= 9) && 6 == sn) || (i == 8 && 6 == sn)) || (i == 4 && 6 == sn)) || (sn == 4 && i == 3)) || (7 == i && 6 == sn)) || (i == 2 && 2 == sn)) || (sn == 0 && i == 1)) || (5 == i && 6 == sn)) || (i == 6 && 6 == sn) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...