/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-simple/nested_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-03 00:30:30,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 00:30:30,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 00:30:30,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 00:30:30,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 00:30:30,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 00:30:30,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 00:30:30,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-03 00:30:30,152 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 00:30:30,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 00:30:30,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 00:30:30,155 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 00:30:30,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 00:30:30,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 00:30:30,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 00:30:30,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 00:30:30,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 00:30:30,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 00:30:30,157 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 00:30:30,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 00:30:30,157 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 00:30:30,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 00:30:30,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 00:30:30,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 00:30:30,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 00:30:30,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 00:30:30,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 00:30:30,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 00:30:30,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-03 00:30:30,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 00:30:30,159 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-03 00:30:30,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-03 00:30:30,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 00:30:30,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 00:30:30,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 00:30:30,494 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-03 00:30:30,495 INFO L275 PluginConnector]: CDTParser initialized [2021-05-03 00:30:30,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_4.c [2021-05-03 00:30:30,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd09c6a0/1c7f09a1d65b4bc19992c580f1aff0b6/FLAGbce45d657 [2021-05-03 00:30:30,864 INFO L306 CDTParser]: Found 1 translation units. [2021-05-03 00:30:30,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_4.c [2021-05-03 00:30:30,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd09c6a0/1c7f09a1d65b4bc19992c580f1aff0b6/FLAGbce45d657 [2021-05-03 00:30:31,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd09c6a0/1c7f09a1d65b4bc19992c580f1aff0b6 [2021-05-03 00:30:31,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 00:30:31,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 00:30:31,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-03 00:30:31,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-03 00:30:31,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-03 00:30:31,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:30:31" (1/1) ... [2021-05-03 00:30:31,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f00204d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31, skipping insertion in model container [2021-05-03 00:30:31,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:30:31" (1/1) ... [2021-05-03 00:30:31,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-03 00:30:31,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-03 00:30:31,421 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_4.c[841,854] [2021-05-03 00:30:31,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:30:31,435 INFO L203 MainTranslator]: Completed pre-run [2021-05-03 00:30:31,450 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_4.c[841,854] [2021-05-03 00:30:31,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:30:31,463 INFO L208 MainTranslator]: Completed translation [2021-05-03 00:30:31,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31 WrapperNode [2021-05-03 00:30:31,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-03 00:30:31,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 00:30:31,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 00:30:31,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 00:30:31,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31" (1/1) ... [2021-05-03 00:30:31,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31" (1/1) ... [2021-05-03 00:30:31,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31" (1/1) ... [2021-05-03 00:30:31,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31" (1/1) ... [2021-05-03 00:30:31,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31" (1/1) ... [2021-05-03 00:30:31,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31" (1/1) ... [2021-05-03 00:30:31,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31" (1/1) ... [2021-05-03 00:30:31,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 00:30:31,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 00:30:31,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 00:30:31,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 00:30:31,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 00:30:31,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-03 00:30:31,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 00:30:31,627 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-03 00:30:31,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-03 00:30:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-03 00:30:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-03 00:30:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-03 00:30:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-03 00:30:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-03 00:30:31,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-03 00:30:31,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 00:30:31,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-03 00:30:31,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-03 00:30:31,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-03 00:30:31,881 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 00:30:31,881 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-05-03 00:30:31,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:30:31 BoogieIcfgContainer [2021-05-03 00:30:31,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 00:30:31,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 00:30:31,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 00:30:31,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 00:30:31,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.05 12:30:31" (1/3) ... [2021-05-03 00:30:31,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606711e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:30:31, skipping insertion in model container [2021-05-03 00:30:31,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:30:31" (2/3) ... [2021-05-03 00:30:31,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606711e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:30:31, skipping insertion in model container [2021-05-03 00:30:31,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:30:31" (3/3) ... [2021-05-03 00:30:31,889 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_4.c [2021-05-03 00:30:31,894 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-03 00:30:31,896 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 00:30:31,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-03 00:30:31,944 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 00:30:31,944 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 00:30:31,944 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-03 00:30:31,944 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 00:30:31,944 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 00:30:31,944 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 00:30:31,945 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 00:30:31,945 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 00:30:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-03 00:30:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-05-03 00:30:31,978 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:31,978 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:31,979 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:31,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:31,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1467912619, now seen corresponding path program 1 times [2021-05-03 00:30:31,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:31,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788385179] [2021-05-03 00:30:31,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:32,050 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:30:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:32,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:32,257 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:32,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788385179] [2021-05-03 00:30:32,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [788385179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:32,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:32,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 00:30:32,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98075610] [2021-05-03 00:30:32,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 00:30:32,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:32,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 00:30:32,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:30:32,282 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:32,362 INFO L93 Difference]: Finished difference Result 38 states and 54 transitions. [2021-05-03 00:30:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 00:30:32,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-05-03 00:30:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:32,370 INFO L225 Difference]: With dead ends: 38 [2021-05-03 00:30:32,371 INFO L226 Difference]: Without dead ends: 17 [2021-05-03 00:30:32,374 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:30:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-03 00:30:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-03 00:30:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-05-03 00:30:32,417 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2021-05-03 00:30:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:32,418 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-05-03 00:30:32,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:32,418 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-05-03 00:30:32,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-05-03 00:30:32,419 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:32,420 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:32,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 00:30:32,420 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:32,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:32,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1467952981, now seen corresponding path program 1 times [2021-05-03 00:30:32,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:32,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693348] [2021-05-03 00:30:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:32,432 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:30:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:32,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:32,548 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:32,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693348] [2021-05-03 00:30:32,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [693348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:32,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:32,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-03 00:30:32,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277090631] [2021-05-03 00:30:32,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-03 00:30:32,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:32,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-03 00:30:32,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-03 00:30:32,552 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:32,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:32,654 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-05-03 00:30:32,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-03 00:30:32,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-05-03 00:30:32,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:32,656 INFO L225 Difference]: With dead ends: 28 [2021-05-03 00:30:32,656 INFO L226 Difference]: Without dead ends: 25 [2021-05-03 00:30:32,657 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-03 00:30:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-03 00:30:32,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2021-05-03 00:30:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-05-03 00:30:32,663 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 9 [2021-05-03 00:30:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:32,664 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-05-03 00:30:32,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-05-03 00:30:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-03 00:30:32,664 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:32,665 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:32,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 00:30:32,665 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:32,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:32,665 INFO L82 PathProgramCache]: Analyzing trace with hash -408278750, now seen corresponding path program 1 times [2021-05-03 00:30:32,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:32,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956387429] [2021-05-03 00:30:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:32,680 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:32,688 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:32,706 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:30:32,715 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:32,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:32,789 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:32,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956387429] [2021-05-03 00:30:32,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1956387429] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:32,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:32,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-03 00:30:32,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781356892] [2021-05-03 00:30:32,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-03 00:30:32,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:32,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-03 00:30:32,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-03 00:30:32,792 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:32,909 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2021-05-03 00:30:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-03 00:30:32,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-03 00:30:32,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:32,911 INFO L225 Difference]: With dead ends: 42 [2021-05-03 00:30:32,911 INFO L226 Difference]: Without dead ends: 31 [2021-05-03 00:30:32,911 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-03 00:30:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-03 00:30:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2021-05-03 00:30:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-05-03 00:30:32,918 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2021-05-03 00:30:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:32,918 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-05-03 00:30:32,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-05-03 00:30:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-03 00:30:32,919 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:32,919 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:32,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-03 00:30:32,919 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:32,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:32,920 INFO L82 PathProgramCache]: Analyzing trace with hash 675904015, now seen corresponding path program 1 times [2021-05-03 00:30:32,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:32,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939255778] [2021-05-03 00:30:32,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:32,926 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:32,928 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:32,936 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:30:32,945 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:32,946 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:32,959 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-03 00:30:32,968 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:33,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:33,037 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:33,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939255778] [2021-05-03 00:30:33,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1939255778] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:33,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:33,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-03 00:30:33,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553691937] [2021-05-03 00:30:33,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 00:30:33,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:33,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 00:30:33,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-03 00:30:33,039 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:33,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:33,209 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2021-05-03 00:30:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 00:30:33,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-03 00:30:33,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:33,211 INFO L225 Difference]: With dead ends: 46 [2021-05-03 00:30:33,211 INFO L226 Difference]: Without dead ends: 35 [2021-05-03 00:30:33,212 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-03 00:30:33,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-03 00:30:33,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2021-05-03 00:30:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:33,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-05-03 00:30:33,218 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2021-05-03 00:30:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:33,218 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-05-03 00:30:33,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-05-03 00:30:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-03 00:30:33,219 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:33,219 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:33,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-03 00:30:33,220 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:33,220 INFO L82 PathProgramCache]: Analyzing trace with hash 919301982, now seen corresponding path program 1 times [2021-05-03 00:30:33,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:33,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196991676] [2021-05-03 00:30:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:33,230 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:33,231 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:33,239 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:30:33,246 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:33,247 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:33,255 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:30:33,265 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:33,266 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:33,286 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:30:33,298 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:33,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:33,371 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:33,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196991676] [2021-05-03 00:30:33,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1196991676] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:33,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:33,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-03 00:30:33,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396384871] [2021-05-03 00:30:33,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-03 00:30:33,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:33,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-03 00:30:33,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-03 00:30:33,374 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:33,556 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-05-03 00:30:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-03 00:30:33,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-05-03 00:30:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:33,558 INFO L225 Difference]: With dead ends: 48 [2021-05-03 00:30:33,558 INFO L226 Difference]: Without dead ends: 37 [2021-05-03 00:30:33,559 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-05-03 00:30:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-03 00:30:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. [2021-05-03 00:30:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-05-03 00:30:33,573 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 18 [2021-05-03 00:30:33,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:33,573 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-05-03 00:30:33,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-05-03 00:30:33,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-03 00:30:33,576 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:33,576 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:33,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-03 00:30:33,581 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:33,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:33,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1380235844, now seen corresponding path program 1 times [2021-05-03 00:30:33,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:33,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502503315] [2021-05-03 00:30:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:33,607 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_21 6) InVars {main_~d~0=v_main_~d~0_21} OutVars{main_~d~0=v_main_~d~0_21} AuxVars[] AssignedVars[] [2021-05-03 00:30:33,618 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:33,630 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:33,644 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:33,655 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:33,677 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:33,680 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:33,697 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:33,717 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_21 6) InVars {main_~d~0=v_main_~d~0_21} OutVars{main_~d~0=v_main_~d~0_21} AuxVars[] AssignedVars[] [2021-05-03 00:30:33,723 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:33,748 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:33,755 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:33,764 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:33,780 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:33,785 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:33,801 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:33,816 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_21 6) InVars {main_~d~0=v_main_~d~0_21} OutVars{main_~d~0=v_main_~d~0_21} AuxVars[] AssignedVars[] [2021-05-03 00:30:33,822 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:33,834 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:33,847 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:33,858 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:33,879 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:33,882 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:33,918 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:33,933 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:33,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:34,027 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:34,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502503315] [2021-05-03 00:30:34,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1502503315] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:34,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:34,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-03 00:30:34,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569360260] [2021-05-03 00:30:34,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-03 00:30:34,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:34,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-03 00:30:34,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-03 00:30:34,029 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:34,260 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2021-05-03 00:30:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-03 00:30:34,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-05-03 00:30:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:34,263 INFO L225 Difference]: With dead ends: 50 [2021-05-03 00:30:34,263 INFO L226 Difference]: Without dead ends: 39 [2021-05-03 00:30:34,264 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 192.2ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-05-03 00:30:34,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-03 00:30:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 23. [2021-05-03 00:30:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-05-03 00:30:34,281 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 20 [2021-05-03 00:30:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:34,282 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-05-03 00:30:34,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-05-03 00:30:34,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-03 00:30:34,285 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:34,285 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:34,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-03 00:30:34,286 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:34,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:34,287 INFO L82 PathProgramCache]: Analyzing trace with hash 672070810, now seen corresponding path program 2 times [2021-05-03 00:30:34,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:34,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028450852] [2021-05-03 00:30:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:34,329 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_46 5) InVars {main_~d~0=v_main_~d~0_46} OutVars{main_~d~0=v_main_~d~0_46} AuxVars[] AssignedVars[] [2021-05-03 00:30:34,341 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:34,344 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:34,352 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:34,369 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:34,387 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:34,388 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:34,405 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:34,416 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_46 5) InVars {main_~d~0=v_main_~d~0_46} OutVars{main_~d~0=v_main_~d~0_46} AuxVars[] AssignedVars[] [2021-05-03 00:30:34,420 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:34,434 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:34,440 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:34,448 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:34,461 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:34,462 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:34,478 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:34,491 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_46 5) InVars {main_~d~0=v_main_~d~0_46} OutVars{main_~d~0=v_main_~d~0_46} AuxVars[] AssignedVars[] [2021-05-03 00:30:34,512 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:34,516 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:34,529 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:34,545 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:34,560 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:34,561 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:34,583 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:34,597 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:34,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:34,699 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:34,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028450852] [2021-05-03 00:30:34,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2028450852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:34,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:34,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 00:30:34,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029432867] [2021-05-03 00:30:34,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 00:30:34,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:34,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 00:30:34,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-03 00:30:34,701 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:34,953 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-05-03 00:30:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 00:30:34,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-05-03 00:30:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:34,955 INFO L225 Difference]: With dead ends: 52 [2021-05-03 00:30:34,955 INFO L226 Difference]: Without dead ends: 41 [2021-05-03 00:30:34,955 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 211.7ms TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-05-03 00:30:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-03 00:30:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2021-05-03 00:30:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-05-03 00:30:34,963 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 22 [2021-05-03 00:30:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:34,963 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-05-03 00:30:34,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:34,964 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-05-03 00:30:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-03 00:30:34,964 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:34,964 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:34,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-03 00:30:34,964 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:34,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1548776440, now seen corresponding path program 3 times [2021-05-03 00:30:34,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:34,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740728820] [2021-05-03 00:30:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:35,002 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_75 5) InVars {main_~d~0=v_main_~d~0_75} OutVars{main_~d~0=v_main_~d~0_75} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,005 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:35,006 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,012 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:35,027 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:35,040 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,041 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,054 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:35,064 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_75 5) InVars {main_~d~0=v_main_~d~0_75} OutVars{main_~d~0=v_main_~d~0_75} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,067 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:35,075 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,080 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:35,087 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:35,100 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,101 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,111 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:35,122 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_75 5) InVars {main_~d~0=v_main_~d~0_75} OutVars{main_~d~0=v_main_~d~0_75} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,125 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:35,127 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,133 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:35,147 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:35,174 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,175 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,198 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:35,210 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:35,341 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:35,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740728820] [2021-05-03 00:30:35,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1740728820] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:35,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:35,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-03 00:30:35,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014319972] [2021-05-03 00:30:35,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-03 00:30:35,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:35,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-03 00:30:35,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-05-03 00:30:35,343 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:35,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:35,642 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2021-05-03 00:30:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-03 00:30:35,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-05-03 00:30:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:35,643 INFO L225 Difference]: With dead ends: 54 [2021-05-03 00:30:35,643 INFO L226 Difference]: Without dead ends: 43 [2021-05-03 00:30:35,644 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 263.0ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-05-03 00:30:35,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-03 00:30:35,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-05-03 00:30:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-05-03 00:30:35,652 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 24 [2021-05-03 00:30:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:35,652 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-05-03 00:30:35,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:35,652 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-05-03 00:30:35,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-03 00:30:35,653 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:35,653 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:35,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-03 00:30:35,653 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:35,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:35,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2045670442, now seen corresponding path program 4 times [2021-05-03 00:30:35,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:35,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295733589] [2021-05-03 00:30:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:35,684 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_108 5) InVars {main_~d~0=v_main_~d~0_108} OutVars{main_~d~0=v_main_~d~0_108} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,687 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:35,695 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,701 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:35,708 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:35,721 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,722 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,737 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:35,747 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_108 5) InVars {main_~d~0=v_main_~d~0_108} OutVars{main_~d~0=v_main_~d~0_108} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,749 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:35,757 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,763 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:35,771 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:35,784 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,785 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,794 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:35,814 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_108 5) InVars {main_~d~0=v_main_~d~0_108} OutVars{main_~d~0=v_main_~d~0_108} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,816 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:35,817 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,823 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:35,841 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:35,858 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:35,859 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:35,884 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:35,899 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:36,030 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:36,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295733589] [2021-05-03 00:30:36,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1295733589] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:36,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:36,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-03 00:30:36,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105411394] [2021-05-03 00:30:36,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-03 00:30:36,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:36,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-03 00:30:36,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-05-03 00:30:36,032 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:36,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:36,358 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2021-05-03 00:30:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-03 00:30:36,359 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-05-03 00:30:36,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:36,359 INFO L225 Difference]: With dead ends: 56 [2021-05-03 00:30:36,360 INFO L226 Difference]: Without dead ends: 45 [2021-05-03 00:30:36,360 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 309.6ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-05-03 00:30:36,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-03 00:30:36,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2021-05-03 00:30:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-05-03 00:30:36,368 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 26 [2021-05-03 00:30:36,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:36,368 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-05-03 00:30:36,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-05-03 00:30:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-03 00:30:36,369 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:36,369 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:36,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-03 00:30:36,370 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:36,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:36,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1139549236, now seen corresponding path program 5 times [2021-05-03 00:30:36,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:36,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541813384] [2021-05-03 00:30:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:36,398 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_145 5) InVars {main_~d~0=v_main_~d~0_145} OutVars{main_~d~0=v_main_~d~0_145} AuxVars[] AssignedVars[] [2021-05-03 00:30:36,401 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:36,409 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:36,414 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:36,424 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:36,436 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:36,437 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:36,448 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:36,457 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_145 5) InVars {main_~d~0=v_main_~d~0_145} OutVars{main_~d~0=v_main_~d~0_145} AuxVars[] AssignedVars[] [2021-05-03 00:30:36,459 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:36,460 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:36,465 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:36,478 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:36,490 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:36,491 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:36,500 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:36,509 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_145 5) InVars {main_~d~0=v_main_~d~0_145} OutVars{main_~d~0=v_main_~d~0_145} AuxVars[] AssignedVars[] [2021-05-03 00:30:36,511 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:36,522 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:36,529 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:36,547 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:36,561 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:36,562 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:36,583 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:36,596 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:36,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:36,758 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:36,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541813384] [2021-05-03 00:30:36,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1541813384] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:36,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:36,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-03 00:30:36,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109143076] [2021-05-03 00:30:36,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-03 00:30:36,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:36,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-03 00:30:36,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-05-03 00:30:36,759 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:37,199 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-05-03 00:30:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-03 00:30:37,200 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-05-03 00:30:37,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:37,200 INFO L225 Difference]: With dead ends: 58 [2021-05-03 00:30:37,201 INFO L226 Difference]: Without dead ends: 47 [2021-05-03 00:30:37,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 366.2ms TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-05-03 00:30:37,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-03 00:30:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2021-05-03 00:30:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-05-03 00:30:37,210 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 28 [2021-05-03 00:30:37,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:37,210 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-05-03 00:30:37,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:37,210 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-05-03 00:30:37,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-03 00:30:37,211 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:37,211 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:37,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-03 00:30:37,211 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:37,212 INFO L82 PathProgramCache]: Analyzing trace with hash -176022254, now seen corresponding path program 6 times [2021-05-03 00:30:37,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:37,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414369181] [2021-05-03 00:30:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:37,285 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_186 5) InVars {main_~d~0=v_main_~d~0_186} OutVars{main_~d~0=v_main_~d~0_186} AuxVars[] AssignedVars[] [2021-05-03 00:30:37,287 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:37,288 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:37,293 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:37,318 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:37,331 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:37,334 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_186 5) InVars {main_~d~0=v_main_~d~0_186} OutVars{main_~d~0=v_main_~d~0_186} AuxVars[] AssignedVars[] [2021-05-03 00:30:37,335 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:37,336 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:37,344 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:37,359 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:37,371 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:37,374 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_186 5) InVars {main_~d~0=v_main_~d~0_186} OutVars{main_~d~0=v_main_~d~0_186} AuxVars[] AssignedVars[] [2021-05-03 00:30:37,375 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:37,383 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:37,388 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:37,395 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:37,411 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:37,412 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:37,432 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:37,445 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:37,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:37,643 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:37,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414369181] [2021-05-03 00:30:37,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1414369181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:37,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:37,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-03 00:30:37,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873627336] [2021-05-03 00:30:37,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-03 00:30:37,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:37,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-03 00:30:37,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-05-03 00:30:37,645 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:38,120 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-05-03 00:30:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-03 00:30:38,120 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-05-03 00:30:38,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:38,121 INFO L225 Difference]: With dead ends: 58 [2021-05-03 00:30:38,121 INFO L226 Difference]: Without dead ends: 47 [2021-05-03 00:30:38,122 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 488.8ms TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2021-05-03 00:30:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-03 00:30:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2021-05-03 00:30:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-05-03 00:30:38,177 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 30 [2021-05-03 00:30:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:38,177 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-05-03 00:30:38,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-05-03 00:30:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-03 00:30:38,181 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:38,181 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:38,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-03 00:30:38,183 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:38,184 INFO L82 PathProgramCache]: Analyzing trace with hash 145574267, now seen corresponding path program 7 times [2021-05-03 00:30:38,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:38,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492866741] [2021-05-03 00:30:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:38,281 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_229 5) InVars {main_~d~0=v_main_~d~0_229} OutVars{main_~d~0=v_main_~d~0_229} AuxVars[] AssignedVars[] [2021-05-03 00:30:38,283 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:38,283 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:38,289 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:38,304 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:38,316 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:38,317 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:38,323 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:30:38,329 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:38,332 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_229 5) InVars {main_~d~0=v_main_~d~0_229} OutVars{main_~d~0=v_main_~d~0_229} AuxVars[] AssignedVars[] [2021-05-03 00:30:38,334 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:38,335 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:38,340 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:38,354 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:38,366 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:38,368 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:38,374 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:30:38,379 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:38,386 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_229 5) InVars {main_~d~0=v_main_~d~0_229} OutVars{main_~d~0=v_main_~d~0_229} AuxVars[] AssignedVars[] [2021-05-03 00:30:38,390 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:38,392 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:38,399 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:38,416 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:38,435 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:38,436 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:38,457 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:38,471 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:38,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:38,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:38,708 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:38,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492866741] [2021-05-03 00:30:38,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [492866741] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:38,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:38,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-03 00:30:38,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273431375] [2021-05-03 00:30:38,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-03 00:30:38,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:38,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-03 00:30:38,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-05-03 00:30:38,710 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:39,254 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2021-05-03 00:30:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-03 00:30:39,255 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-05-03 00:30:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:39,256 INFO L225 Difference]: With dead ends: 60 [2021-05-03 00:30:39,256 INFO L226 Difference]: Without dead ends: 49 [2021-05-03 00:30:39,257 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 528.0ms TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2021-05-03 00:30:39,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-03 00:30:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2021-05-03 00:30:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-05-03 00:30:39,266 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 33 [2021-05-03 00:30:39,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:39,267 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-05-03 00:30:39,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-05-03 00:30:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-03 00:30:39,267 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:39,267 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:39,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-03 00:30:39,268 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1903227751, now seen corresponding path program 8 times [2021-05-03 00:30:39,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:39,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146603248] [2021-05-03 00:30:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:39,378 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_278 6) InVars {main_~d~0=v_main_~d~0_278} OutVars{main_~d~0=v_main_~d~0_278} AuxVars[] AssignedVars[] [2021-05-03 00:30:39,381 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:39,382 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:39,388 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:39,403 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:39,419 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_139 5) (<= 6 v_main_~d~0_280)) InVars {main_~c~0=v_main_~c~0_139, main_~d~0=v_main_~d~0_280} OutVars{main_~c~0=v_main_~c~0_139, main_~d~0=v_main_~d~0_280} AuxVars[] AssignedVars[] [2021-05-03 00:30:39,422 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:30:39,442 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:39,445 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:39,454 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:30:39,475 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:39,479 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:39,487 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:39,493 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:39,510 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_278 6) InVars {main_~d~0=v_main_~d~0_278} OutVars{main_~d~0=v_main_~d~0_278} AuxVars[] AssignedVars[] [2021-05-03 00:30:39,511 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:39,521 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:39,526 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:39,534 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:39,546 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_139 5) (<= 6 v_main_~d~0_280)) InVars {main_~c~0=v_main_~c~0_139, main_~d~0=v_main_~d~0_280} OutVars{main_~c~0=v_main_~c~0_139, main_~d~0=v_main_~d~0_280} AuxVars[] AssignedVars[] [2021-05-03 00:30:39,549 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:30:39,563 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:39,566 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:39,576 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:30:39,596 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:39,598 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:39,608 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:39,617 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:39,621 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_278 6) InVars {main_~d~0=v_main_~d~0_278} OutVars{main_~d~0=v_main_~d~0_278} AuxVars[] AssignedVars[] [2021-05-03 00:30:39,622 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:39,629 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:39,635 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:39,642 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:39,656 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_139 5) (<= 6 v_main_~d~0_280)) InVars {main_~c~0=v_main_~c~0_139, main_~d~0=v_main_~d~0_280} OutVars{main_~c~0=v_main_~c~0_139, main_~d~0=v_main_~d~0_280} AuxVars[] AssignedVars[] [2021-05-03 00:30:39,658 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:30:39,659 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:39,662 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:39,687 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:30:39,707 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:39,708 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:39,740 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:39,766 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:39,987 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:39,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146603248] [2021-05-03 00:30:39,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2146603248] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:39,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:39,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-03 00:30:39,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801505179] [2021-05-03 00:30:39,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-03 00:30:39,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:39,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-03 00:30:39,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-05-03 00:30:39,988 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:40,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:40,497 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-05-03 00:30:40,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-03 00:30:40,497 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-03 00:30:40,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:40,498 INFO L225 Difference]: With dead ends: 62 [2021-05-03 00:30:40,498 INFO L226 Difference]: Without dead ends: 51 [2021-05-03 00:30:40,498 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 518.0ms TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2021-05-03 00:30:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-03 00:30:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2021-05-03 00:30:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-03 00:30:40,506 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 35 [2021-05-03 00:30:40,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:40,506 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-03 00:30:40,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-03 00:30:40,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-03 00:30:40,507 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:40,507 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:40,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-03 00:30:40,507 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:40,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:40,508 INFO L82 PathProgramCache]: Analyzing trace with hash 588021815, now seen corresponding path program 9 times [2021-05-03 00:30:40,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:40,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819766700] [2021-05-03 00:30:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:40,637 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_174 5) (<= 5 v_main_~d~0_349)) InVars {main_~c~0=v_main_~c~0_174, main_~d~0=v_main_~d~0_349} OutVars{main_~c~0=v_main_~c~0_174, main_~d~0=v_main_~d~0_349} AuxVars[] AssignedVars[] [2021-05-03 00:30:40,639 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:40,640 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:40,642 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:40,663 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:40,693 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_351 5) InVars {main_~d~0=v_main_~d~0_351} OutVars{main_~d~0=v_main_~d~0_351} AuxVars[] AssignedVars[] [2021-05-03 00:30:40,694 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:40,695 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:40,701 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:40,716 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:40,730 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:40,731 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:40,741 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:40,759 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_181 6) InVars {main_~c~0=v_main_~c~0_181} OutVars{main_~c~0=v_main_~c~0_181} AuxVars[] AssignedVars[] [2021-05-03 00:30:40,763 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:30:40,777 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:40,782 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:40,792 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:30:40,815 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_174 5) (<= 5 v_main_~d~0_349)) InVars {main_~c~0=v_main_~c~0_174, main_~d~0=v_main_~d~0_349} OutVars{main_~c~0=v_main_~c~0_174, main_~d~0=v_main_~d~0_349} AuxVars[] AssignedVars[] [2021-05-03 00:30:40,818 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:40,834 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:40,841 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:40,851 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:40,871 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_351 5) InVars {main_~d~0=v_main_~d~0_351} OutVars{main_~d~0=v_main_~d~0_351} AuxVars[] AssignedVars[] [2021-05-03 00:30:40,873 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:40,880 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:40,885 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:40,893 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:40,905 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:40,906 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:40,914 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:40,923 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_181 6) InVars {main_~c~0=v_main_~c~0_181} OutVars{main_~c~0=v_main_~c~0_181} AuxVars[] AssignedVars[] [2021-05-03 00:30:40,925 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:30:40,926 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:40,933 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:40,955 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:30:40,973 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_174 5) (<= 5 v_main_~d~0_349)) InVars {main_~c~0=v_main_~c~0_174, main_~d~0=v_main_~d~0_349} OutVars{main_~c~0=v_main_~c~0_174, main_~d~0=v_main_~d~0_349} AuxVars[] AssignedVars[] [2021-05-03 00:30:40,975 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:40,976 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:40,979 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:41,002 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:41,020 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_351 5) InVars {main_~d~0=v_main_~d~0_351} OutVars{main_~d~0=v_main_~d~0_351} AuxVars[] AssignedVars[] [2021-05-03 00:30:41,021 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:41,030 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:41,036 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:41,043 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:41,056 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:41,058 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:41,076 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:41,088 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:41,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:41,326 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:41,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819766700] [2021-05-03 00:30:41,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [819766700] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:41,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:41,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-03 00:30:41,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716573414] [2021-05-03 00:30:41,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-03 00:30:41,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:41,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-03 00:30:41,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-05-03 00:30:41,328 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:41,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:41,925 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2021-05-03 00:30:41,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-03 00:30:41,925 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-03 00:30:41,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:41,926 INFO L225 Difference]: With dead ends: 64 [2021-05-03 00:30:41,926 INFO L226 Difference]: Without dead ends: 53 [2021-05-03 00:30:41,927 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 587.1ms TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-05-03 00:30:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-03 00:30:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2021-05-03 00:30:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-03 00:30:41,938 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 37 [2021-05-03 00:30:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:41,938 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-03 00:30:41,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:41,938 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-03 00:30:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-03 00:30:41,939 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:41,939 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:41,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-03 00:30:41,939 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:41,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1912896427, now seen corresponding path program 10 times [2021-05-03 00:30:41,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:41,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091452581] [2021-05-03 00:30:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:42,065 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_207 5) (<= 5 v_main_~d~0_423)) InVars {main_~c~0=v_main_~c~0_207, main_~d~0=v_main_~d~0_423} OutVars{main_~c~0=v_main_~c~0_207, main_~d~0=v_main_~d~0_423} AuxVars[] AssignedVars[] [2021-05-03 00:30:42,067 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:42,084 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:42,086 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:42,095 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:42,114 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_425 5) InVars {main_~d~0=v_main_~d~0_425} OutVars{main_~d~0=v_main_~d~0_425} AuxVars[] AssignedVars[] [2021-05-03 00:30:42,115 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:42,130 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:42,134 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:42,140 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:42,153 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:42,154 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:42,154 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:42,163 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:42,173 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_207 5) (<= 5 v_main_~d~0_423)) InVars {main_~c~0=v_main_~c~0_207, main_~d~0=v_main_~d~0_423} OutVars{main_~c~0=v_main_~c~0_207, main_~d~0=v_main_~d~0_423} AuxVars[] AssignedVars[] [2021-05-03 00:30:42,175 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:42,190 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:42,193 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:42,202 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:42,231 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_425 5) InVars {main_~d~0=v_main_~d~0_425} OutVars{main_~d~0=v_main_~d~0_425} AuxVars[] AssignedVars[] [2021-05-03 00:30:42,233 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:42,242 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:42,246 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:42,252 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:42,263 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:42,275 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:42,276 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:42,286 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:42,295 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_207 5) (<= 5 v_main_~d~0_423)) InVars {main_~c~0=v_main_~c~0_207, main_~d~0=v_main_~d~0_423} OutVars{main_~c~0=v_main_~c~0_207, main_~d~0=v_main_~d~0_423} AuxVars[] AssignedVars[] [2021-05-03 00:30:42,306 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:42,307 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:42,310 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:42,342 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:42,368 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_425 5) InVars {main_~d~0=v_main_~d~0_425} OutVars{main_~d~0=v_main_~d~0_425} AuxVars[] AssignedVars[] [2021-05-03 00:30:42,369 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:42,370 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:42,374 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:42,387 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:42,406 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:42,408 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:42,428 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:42,444 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:42,741 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:42,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091452581] [2021-05-03 00:30:42,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1091452581] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:42,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:42,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-03 00:30:42,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338008036] [2021-05-03 00:30:42,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-03 00:30:42,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:42,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-03 00:30:42,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-05-03 00:30:42,743 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:43,366 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2021-05-03 00:30:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-03 00:30:43,366 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-03 00:30:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:43,367 INFO L225 Difference]: With dead ends: 66 [2021-05-03 00:30:43,367 INFO L226 Difference]: Without dead ends: 55 [2021-05-03 00:30:43,368 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 632.7ms TimeCoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056 [2021-05-03 00:30:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-03 00:30:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2021-05-03 00:30:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-05-03 00:30:43,380 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 39 [2021-05-03 00:30:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:43,380 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-05-03 00:30:43,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-05-03 00:30:43,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-03 00:30:43,382 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:43,382 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:43,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-03 00:30:43,383 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:43,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:43,383 INFO L82 PathProgramCache]: Analyzing trace with hash -113641229, now seen corresponding path program 11 times [2021-05-03 00:30:43,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:43,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692411305] [2021-05-03 00:30:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:43,493 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_497) (< v_main_~c~0_240 5)) InVars {main_~c~0=v_main_~c~0_240, main_~d~0=v_main_~d~0_497} OutVars{main_~c~0=v_main_~c~0_240, main_~d~0=v_main_~d~0_497} AuxVars[] AssignedVars[] [2021-05-03 00:30:43,499 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:43,499 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:43,502 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:43,523 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:43,540 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_499 5) InVars {main_~d~0=v_main_~d~0_499} OutVars{main_~d~0=v_main_~d~0_499} AuxVars[] AssignedVars[] [2021-05-03 00:30:43,541 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:43,547 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:43,551 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:43,557 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:43,567 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:43,567 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:43,575 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:43,580 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:43,586 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_497) (< v_main_~c~0_240 5)) InVars {main_~c~0=v_main_~c~0_240, main_~d~0=v_main_~d~0_497} OutVars{main_~c~0=v_main_~c~0_240, main_~d~0=v_main_~d~0_497} AuxVars[] AssignedVars[] [2021-05-03 00:30:43,596 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:43,614 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:43,617 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:43,628 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:43,649 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_499 5) InVars {main_~d~0=v_main_~d~0_499} OutVars{main_~d~0=v_main_~d~0_499} AuxVars[] AssignedVars[] [2021-05-03 00:30:43,650 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:43,650 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:43,656 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:43,667 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:43,678 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:43,683 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:43,691 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:43,697 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:43,709 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_497) (< v_main_~c~0_240 5)) InVars {main_~c~0=v_main_~c~0_240, main_~d~0=v_main_~d~0_497} OutVars{main_~c~0=v_main_~c~0_240, main_~d~0=v_main_~d~0_497} AuxVars[] AssignedVars[] [2021-05-03 00:30:43,711 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:43,711 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:43,714 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:43,740 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:43,757 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_499 5) InVars {main_~d~0=v_main_~d~0_499} OutVars{main_~d~0=v_main_~d~0_499} AuxVars[] AssignedVars[] [2021-05-03 00:30:43,759 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:43,772 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:43,777 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:43,783 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:43,797 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:43,798 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:43,815 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:43,826 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:44,086 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:44,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692411305] [2021-05-03 00:30:44,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [692411305] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:44,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:44,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-03 00:30:44,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208656380] [2021-05-03 00:30:44,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-03 00:30:44,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:44,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-03 00:30:44,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-05-03 00:30:44,087 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:44,792 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2021-05-03 00:30:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-03 00:30:44,792 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-05-03 00:30:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:44,794 INFO L225 Difference]: With dead ends: 68 [2021-05-03 00:30:44,794 INFO L226 Difference]: Without dead ends: 57 [2021-05-03 00:30:44,794 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 668.0ms TimeCoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2021-05-03 00:30:44,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-03 00:30:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2021-05-03 00:30:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-05-03 00:30:44,808 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 41 [2021-05-03 00:30:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:44,809 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-05-03 00:30:44,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-05-03 00:30:44,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-03 00:30:44,809 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:44,809 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:44,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-03 00:30:44,810 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:44,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:44,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1901216239, now seen corresponding path program 12 times [2021-05-03 00:30:44,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:44,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362446102] [2021-05-03 00:30:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:44,924 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_273 5) (<= 5 v_main_~d~0_575)) InVars {main_~c~0=v_main_~c~0_273, main_~d~0=v_main_~d~0_575} OutVars{main_~c~0=v_main_~c~0_273, main_~d~0=v_main_~d~0_575} AuxVars[] AssignedVars[] [2021-05-03 00:30:44,926 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:44,927 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:44,929 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:44,952 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:44,970 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_577 5) InVars {main_~d~0=v_main_~d~0_577} OutVars{main_~d~0=v_main_~d~0_577} AuxVars[] AssignedVars[] [2021-05-03 00:30:44,972 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:44,980 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:44,985 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:44,994 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:45,009 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:45,010 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:45,018 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:45,028 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:45,034 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_273 5) (<= 5 v_main_~d~0_575)) InVars {main_~c~0=v_main_~c~0_273, main_~d~0=v_main_~d~0_575} OutVars{main_~c~0=v_main_~c~0_273, main_~d~0=v_main_~d~0_575} AuxVars[] AssignedVars[] [2021-05-03 00:30:45,036 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:45,052 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:45,055 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:45,066 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:45,086 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_577 5) InVars {main_~d~0=v_main_~d~0_577} OutVars{main_~d~0=v_main_~d~0_577} AuxVars[] AssignedVars[] [2021-05-03 00:30:45,087 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:45,095 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:45,100 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:45,107 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:45,119 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:45,120 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:45,129 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:45,135 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:45,139 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_273 5) (<= 5 v_main_~d~0_575)) InVars {main_~c~0=v_main_~c~0_273, main_~d~0=v_main_~d~0_575} OutVars{main_~c~0=v_main_~c~0_273, main_~d~0=v_main_~d~0_575} AuxVars[] AssignedVars[] [2021-05-03 00:30:45,141 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:45,141 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:45,144 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:45,168 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:45,188 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_577 5) InVars {main_~d~0=v_main_~d~0_577} OutVars{main_~d~0=v_main_~d~0_577} AuxVars[] AssignedVars[] [2021-05-03 00:30:45,189 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:45,190 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:45,195 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:45,208 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:45,227 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:45,228 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:45,248 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:45,261 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:45,602 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:45,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362446102] [2021-05-03 00:30:45,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1362446102] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:45,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:45,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-03 00:30:45,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425742186] [2021-05-03 00:30:45,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-03 00:30:45,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:45,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-03 00:30:45,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-05-03 00:30:45,605 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:46,304 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2021-05-03 00:30:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-03 00:30:46,305 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-05-03 00:30:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:46,305 INFO L225 Difference]: With dead ends: 72 [2021-05-03 00:30:46,305 INFO L226 Difference]: Without dead ends: 61 [2021-05-03 00:30:46,306 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 754.1ms TimeCoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2021-05-03 00:30:46,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-03 00:30:46,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2021-05-03 00:30:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-05-03 00:30:46,317 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 43 [2021-05-03 00:30:46,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:46,318 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-05-03 00:30:46,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-05-03 00:30:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-03 00:30:46,318 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:46,318 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:46,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-03 00:30:46,318 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:46,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1773882449, now seen corresponding path program 13 times [2021-05-03 00:30:46,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:46,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075242533] [2021-05-03 00:30:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:46,410 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_306 5) (<= 5 v_main_~d~0_657)) InVars {main_~c~0=v_main_~c~0_306, main_~d~0=v_main_~d~0_657} OutVars{main_~c~0=v_main_~c~0_306, main_~d~0=v_main_~d~0_657} AuxVars[] AssignedVars[] [2021-05-03 00:30:46,421 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:46,439 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:46,442 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:46,452 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:46,472 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_659 5) InVars {main_~d~0=v_main_~d~0_659} OutVars{main_~d~0=v_main_~d~0_659} AuxVars[] AssignedVars[] [2021-05-03 00:30:46,474 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:46,481 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:46,486 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:46,492 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:46,507 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_311 6) InVars {main_~c~0=v_main_~c~0_311} OutVars{main_~c~0=v_main_~c~0_311} AuxVars[] AssignedVars[] [2021-05-03 00:30:46,509 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:30:46,522 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:46,527 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:46,536 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:30:46,557 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_306 5) (<= 5 v_main_~d~0_657)) InVars {main_~c~0=v_main_~c~0_306, main_~d~0=v_main_~d~0_657} OutVars{main_~c~0=v_main_~c~0_306, main_~d~0=v_main_~d~0_657} AuxVars[] AssignedVars[] [2021-05-03 00:30:46,558 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:46,577 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:46,579 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:46,590 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:46,609 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_659 5) InVars {main_~d~0=v_main_~d~0_659} OutVars{main_~d~0=v_main_~d~0_659} AuxVars[] AssignedVars[] [2021-05-03 00:30:46,610 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:46,611 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:46,615 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:46,641 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:46,662 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_311 6) InVars {main_~c~0=v_main_~c~0_311} OutVars{main_~c~0=v_main_~c~0_311} AuxVars[] AssignedVars[] [2021-05-03 00:30:46,664 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:30:46,676 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:46,682 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:46,692 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:30:46,709 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_306 5) (<= 5 v_main_~d~0_657)) InVars {main_~c~0=v_main_~c~0_306, main_~d~0=v_main_~d~0_657} OutVars{main_~c~0=v_main_~c~0_306, main_~d~0=v_main_~d~0_657} AuxVars[] AssignedVars[] [2021-05-03 00:30:46,714 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:46,730 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:46,733 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:46,743 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:46,762 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_659 5) InVars {main_~d~0=v_main_~d~0_659} OutVars{main_~d~0=v_main_~d~0_659} AuxVars[] AssignedVars[] [2021-05-03 00:30:46,764 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:46,764 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:46,769 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:46,783 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:46,801 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:46,802 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:46,821 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:46,833 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:46,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:47,167 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:47,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075242533] [2021-05-03 00:30:47,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2075242533] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:47,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:47,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-03 00:30:47,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526198751] [2021-05-03 00:30:47,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-03 00:30:47,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:47,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-03 00:30:47,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-05-03 00:30:47,169 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:47,934 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2021-05-03 00:30:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-03 00:30:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-03 00:30:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:47,936 INFO L225 Difference]: With dead ends: 73 [2021-05-03 00:30:47,936 INFO L226 Difference]: Without dead ends: 62 [2021-05-03 00:30:47,936 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 771.4ms TimeCoverageRelationStatistics Valid=231, Invalid=1251, Unknown=0, NotChecked=0, Total=1482 [2021-05-03 00:30:47,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-03 00:30:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2021-05-03 00:30:47,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-05-03 00:30:47,953 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 45 [2021-05-03 00:30:47,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:47,953 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-05-03 00:30:47,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:47,953 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-05-03 00:30:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-03 00:30:47,954 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:47,954 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:47,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-03 00:30:47,954 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:47,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:47,954 INFO L82 PathProgramCache]: Analyzing trace with hash -584953410, now seen corresponding path program 14 times [2021-05-03 00:30:47,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:47,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226739615] [2021-05-03 00:30:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:48,066 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_734) (< v_main_~c~0_332 5)) InVars {main_~c~0=v_main_~c~0_332, main_~d~0=v_main_~d~0_734} OutVars{main_~c~0=v_main_~c~0_332, main_~d~0=v_main_~d~0_734} AuxVars[] AssignedVars[] [2021-05-03 00:30:48,068 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:48,085 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:48,088 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:48,099 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:48,121 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_736 5) InVars {main_~d~0=v_main_~d~0_736} OutVars{main_~d~0=v_main_~d~0_736} AuxVars[] AssignedVars[] [2021-05-03 00:30:48,123 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:48,131 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:48,135 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:48,142 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:48,155 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:48,161 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:48,167 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:30:48,172 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:48,176 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_734) (< v_main_~c~0_332 5)) InVars {main_~c~0=v_main_~c~0_332, main_~d~0=v_main_~d~0_734} OutVars{main_~c~0=v_main_~c~0_332, main_~d~0=v_main_~d~0_734} AuxVars[] AssignedVars[] [2021-05-03 00:30:48,177 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:48,178 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:48,183 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:48,206 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:48,234 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_736 5) InVars {main_~d~0=v_main_~d~0_736} OutVars{main_~d~0=v_main_~d~0_736} AuxVars[] AssignedVars[] [2021-05-03 00:30:48,235 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:48,236 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:48,241 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:48,255 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:48,267 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:48,268 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:48,274 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:30:48,279 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:48,283 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_734) (< v_main_~c~0_332 5)) InVars {main_~c~0=v_main_~c~0_332, main_~d~0=v_main_~d~0_734} OutVars{main_~c~0=v_main_~c~0_332, main_~d~0=v_main_~d~0_734} AuxVars[] AssignedVars[] [2021-05-03 00:30:48,284 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:48,285 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:48,287 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:48,310 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:48,329 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_736 5) InVars {main_~d~0=v_main_~d~0_736} OutVars{main_~d~0=v_main_~d~0_736} AuxVars[] AssignedVars[] [2021-05-03 00:30:48,331 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:48,338 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:48,343 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:48,349 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:48,369 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:48,370 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:48,388 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:48,400 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:48,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:48,767 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:48,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226739615] [2021-05-03 00:30:48,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [226739615] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:48,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:48,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-03 00:30:48,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257116604] [2021-05-03 00:30:48,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-03 00:30:48,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:48,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-03 00:30:48,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-05-03 00:30:48,769 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:49,668 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2021-05-03 00:30:49,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-03 00:30:49,669 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-05-03 00:30:49,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:49,670 INFO L225 Difference]: With dead ends: 75 [2021-05-03 00:30:49,670 INFO L226 Difference]: Without dead ends: 64 [2021-05-03 00:30:49,670 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 841.5ms TimeCoverageRelationStatistics Valid=243, Invalid=1397, Unknown=0, NotChecked=0, Total=1640 [2021-05-03 00:30:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-03 00:30:49,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2021-05-03 00:30:49,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-05-03 00:30:49,683 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 48 [2021-05-03 00:30:49,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:49,683 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-05-03 00:30:49,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 21 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:49,683 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2021-05-03 00:30:49,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-03 00:30:49,684 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:49,684 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:49,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-03 00:30:49,684 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:49,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:49,684 INFO L82 PathProgramCache]: Analyzing trace with hash 434311196, now seen corresponding path program 15 times [2021-05-03 00:30:49,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:49,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605169741] [2021-05-03 00:30:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:49,791 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_812 6) InVars {main_~d~0=v_main_~d~0_812} OutVars{main_~d~0=v_main_~d~0_812} AuxVars[] AssignedVars[] [2021-05-03 00:30:49,792 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:49,792 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:49,797 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:49,808 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:49,819 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_366 5) (<= 6 v_main_~d~0_814)) InVars {main_~c~0=v_main_~c~0_366, main_~d~0=v_main_~d~0_814} OutVars{main_~c~0=v_main_~c~0_366, main_~d~0=v_main_~d~0_814} AuxVars[] AssignedVars[] [2021-05-03 00:30:49,824 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:30:49,836 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:49,840 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:49,861 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:30:49,879 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:49,880 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:49,888 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:49,895 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:49,898 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_812 6) InVars {main_~d~0=v_main_~d~0_812} OutVars{main_~d~0=v_main_~d~0_812} AuxVars[] AssignedVars[] [2021-05-03 00:30:49,899 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:49,906 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:49,911 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:49,918 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:49,930 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_366 5) (<= 6 v_main_~d~0_814)) InVars {main_~c~0=v_main_~c~0_366, main_~d~0=v_main_~d~0_814} OutVars{main_~c~0=v_main_~c~0_366, main_~d~0=v_main_~d~0_814} AuxVars[] AssignedVars[] [2021-05-03 00:30:49,931 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:30:49,932 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:49,935 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:49,955 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:30:49,974 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:49,974 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:49,984 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:49,990 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:49,996 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_812 6) InVars {main_~d~0=v_main_~d~0_812} OutVars{main_~d~0=v_main_~d~0_812} AuxVars[] AssignedVars[] [2021-05-03 00:30:49,997 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:50,005 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:50,011 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:50,017 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:50,029 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_366 5) (<= 6 v_main_~d~0_814)) InVars {main_~c~0=v_main_~c~0_366, main_~d~0=v_main_~d~0_814} OutVars{main_~c~0=v_main_~c~0_366, main_~d~0=v_main_~d~0_814} AuxVars[] AssignedVars[] [2021-05-03 00:30:50,031 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:30:50,033 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:50,036 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:50,056 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:30:50,082 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:50,082 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:50,099 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:50,110 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:50,490 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:50,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605169741] [2021-05-03 00:30:50,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [605169741] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:50,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:50,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-03 00:30:50,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588123282] [2021-05-03 00:30:50,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-03 00:30:50,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:50,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-03 00:30:50,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2021-05-03 00:30:50,492 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:51,384 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2021-05-03 00:30:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-03 00:30:51,384 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-05-03 00:30:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:51,385 INFO L225 Difference]: With dead ends: 77 [2021-05-03 00:30:51,385 INFO L226 Difference]: Without dead ends: 66 [2021-05-03 00:30:51,385 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 907.5ms TimeCoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2021-05-03 00:30:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-03 00:30:51,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2021-05-03 00:30:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2021-05-03 00:30:51,400 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 50 [2021-05-03 00:30:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:51,400 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2021-05-03 00:30:51,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2021-05-03 00:30:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-03 00:30:51,401 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:51,401 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:51,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-03 00:30:51,401 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:51,401 INFO L82 PathProgramCache]: Analyzing trace with hash 695054074, now seen corresponding path program 16 times [2021-05-03 00:30:51,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:51,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435858160] [2021-05-03 00:30:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:51,515 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_904) (< v_main_~c~0_404 5)) InVars {main_~c~0=v_main_~c~0_404, main_~d~0=v_main_~d~0_904} OutVars{main_~c~0=v_main_~c~0_404, main_~d~0=v_main_~d~0_904} AuxVars[] AssignedVars[] [2021-05-03 00:30:51,517 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:51,530 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:51,532 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:51,540 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:51,557 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_906 5) InVars {main_~d~0=v_main_~d~0_906} OutVars{main_~d~0=v_main_~d~0_906} AuxVars[] AssignedVars[] [2021-05-03 00:30:51,559 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:51,559 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:51,563 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:51,575 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:51,586 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:51,586 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:51,594 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:51,599 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:51,603 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_904) (< v_main_~c~0_404 5)) InVars {main_~c~0=v_main_~c~0_404, main_~d~0=v_main_~d~0_904} OutVars{main_~c~0=v_main_~c~0_404, main_~d~0=v_main_~d~0_904} AuxVars[] AssignedVars[] [2021-05-03 00:30:51,604 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:51,605 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:51,607 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:51,628 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:51,650 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_906 5) InVars {main_~d~0=v_main_~d~0_906} OutVars{main_~d~0=v_main_~d~0_906} AuxVars[] AssignedVars[] [2021-05-03 00:30:51,651 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:51,662 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:51,666 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:51,671 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:51,682 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:51,683 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:51,690 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:51,696 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:51,700 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_904) (< v_main_~c~0_404 5)) InVars {main_~c~0=v_main_~c~0_404, main_~d~0=v_main_~d~0_904} OutVars{main_~c~0=v_main_~c~0_404, main_~d~0=v_main_~d~0_904} AuxVars[] AssignedVars[] [2021-05-03 00:30:51,708 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:51,708 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:51,712 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:51,735 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:51,753 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_906 5) InVars {main_~d~0=v_main_~d~0_906} OutVars{main_~d~0=v_main_~d~0_906} AuxVars[] AssignedVars[] [2021-05-03 00:30:51,758 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:51,759 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:51,763 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:51,775 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:51,796 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:51,797 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:51,820 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:51,832 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:51,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:52,247 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:52,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435858160] [2021-05-03 00:30:52,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [435858160] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:52,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:52,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-03 00:30:52,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654821391] [2021-05-03 00:30:52,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-03 00:30:52,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:52,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-03 00:30:52,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-05-03 00:30:52,249 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:53,274 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-05-03 00:30:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-03 00:30:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-05-03 00:30:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:53,286 INFO L225 Difference]: With dead ends: 79 [2021-05-03 00:30:53,286 INFO L226 Difference]: Without dead ends: 68 [2021-05-03 00:30:53,287 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 923.9ms TimeCoverageRelationStatistics Valid=267, Invalid=1713, Unknown=0, NotChecked=0, Total=1980 [2021-05-03 00:30:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-03 00:30:53,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2021-05-03 00:30:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-05-03 00:30:53,307 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 52 [2021-05-03 00:30:53,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:53,307 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-05-03 00:30:53,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-05-03 00:30:53,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-03 00:30:53,308 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:53,308 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:53,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-03 00:30:53,308 INFO L428 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:53,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2134110632, now seen corresponding path program 17 times [2021-05-03 00:30:53,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:53,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632265267] [2021-05-03 00:30:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:53,416 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_995) (< v_main_~c~0_440 5)) InVars {main_~c~0=v_main_~c~0_440, main_~d~0=v_main_~d~0_995} OutVars{main_~c~0=v_main_~c~0_440, main_~d~0=v_main_~d~0_995} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,418 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:53,432 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,444 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:53,452 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:53,469 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_997 5) InVars {main_~d~0=v_main_~d~0_997} OutVars{main_~d~0=v_main_~d~0_997} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,470 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:53,471 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,475 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:53,486 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:53,498 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_446 6) InVars {main_~c~0=v_main_~c~0_446} OutVars{main_~c~0=v_main_~c~0_446} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,499 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:30:53,501 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,505 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:53,526 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:30:53,557 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,558 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,567 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:53,576 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_995) (< v_main_~c~0_440 5)) InVars {main_~c~0=v_main_~c~0_440, main_~d~0=v_main_~d~0_995} OutVars{main_~c~0=v_main_~c~0_440, main_~d~0=v_main_~d~0_995} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,577 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:53,592 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,596 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:53,605 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:53,623 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_997 5) InVars {main_~d~0=v_main_~d~0_997} OutVars{main_~d~0=v_main_~d~0_997} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,624 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:53,625 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,629 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:53,642 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:53,655 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_446 6) InVars {main_~c~0=v_main_~c~0_446} OutVars{main_~c~0=v_main_~c~0_446} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,657 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:30:53,668 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,673 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:53,683 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:30:53,699 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,699 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,707 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:53,716 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_995) (< v_main_~c~0_440 5)) InVars {main_~c~0=v_main_~c~0_440, main_~d~0=v_main_~d~0_995} OutVars{main_~c~0=v_main_~c~0_440, main_~d~0=v_main_~d~0_995} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,718 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:53,718 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,721 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:53,743 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:53,762 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_997 5) InVars {main_~d~0=v_main_~d~0_997} OutVars{main_~d~0=v_main_~d~0_997} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,763 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:53,771 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,775 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:53,782 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:53,797 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:53,798 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:53,817 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:53,830 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:53,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:54,276 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:54,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632265267] [2021-05-03 00:30:54,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1632265267] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:54,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:54,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-03 00:30:54,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741909789] [2021-05-03 00:30:54,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-03 00:30:54,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:54,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-03 00:30:54,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-05-03 00:30:54,278 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:55,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:55,242 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2021-05-03 00:30:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-03 00:30:55,244 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-05-03 00:30:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:55,245 INFO L225 Difference]: With dead ends: 81 [2021-05-03 00:30:55,245 INFO L226 Difference]: Without dead ends: 70 [2021-05-03 00:30:55,246 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 994.9ms TimeCoverageRelationStatistics Valid=279, Invalid=1883, Unknown=0, NotChecked=0, Total=2162 [2021-05-03 00:30:55,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-03 00:30:55,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2021-05-03 00:30:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2021-05-03 00:30:55,262 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 54 [2021-05-03 00:30:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:55,262 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2021-05-03 00:30:55,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 24 states have internal predecessors, (51), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2021-05-03 00:30:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-03 00:30:55,262 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:55,263 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:55,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-03 00:30:55,263 INFO L428 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:55,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:55,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2047872566, now seen corresponding path program 18 times [2021-05-03 00:30:55,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:55,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869833016] [2021-05-03 00:30:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:55,361 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1094) (< v_main_~c~0_476 5)) InVars {main_~c~0=v_main_~c~0_476, main_~d~0=v_main_~d~0_1094} OutVars{main_~c~0=v_main_~c~0_476, main_~d~0=v_main_~d~0_1094} AuxVars[] AssignedVars[] [2021-05-03 00:30:55,363 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:55,363 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:55,366 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:55,386 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:55,403 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1096 5) InVars {main_~d~0=v_main_~d~0_1096} OutVars{main_~d~0=v_main_~d~0_1096} AuxVars[] AssignedVars[] [2021-05-03 00:30:55,413 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:55,414 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:55,419 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:55,433 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:55,444 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:55,445 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:55,452 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:55,458 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:55,461 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1094) (< v_main_~c~0_476 5)) InVars {main_~c~0=v_main_~c~0_476, main_~d~0=v_main_~d~0_1094} OutVars{main_~c~0=v_main_~c~0_476, main_~d~0=v_main_~d~0_1094} AuxVars[] AssignedVars[] [2021-05-03 00:30:55,462 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:55,475 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:55,478 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:55,486 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:55,503 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1096 5) InVars {main_~d~0=v_main_~d~0_1096} OutVars{main_~d~0=v_main_~d~0_1096} AuxVars[] AssignedVars[] [2021-05-03 00:30:55,504 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:55,521 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:55,525 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:55,530 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:55,543 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:55,544 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:55,553 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:55,560 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:55,563 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1094) (< v_main_~c~0_476 5)) InVars {main_~c~0=v_main_~c~0_476, main_~d~0=v_main_~d~0_1094} OutVars{main_~c~0=v_main_~c~0_476, main_~d~0=v_main_~d~0_1094} AuxVars[] AssignedVars[] [2021-05-03 00:30:55,565 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:55,566 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:55,568 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:55,591 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:55,610 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1096 5) InVars {main_~d~0=v_main_~d~0_1096} OutVars{main_~d~0=v_main_~d~0_1096} AuxVars[] AssignedVars[] [2021-05-03 00:30:55,612 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:55,619 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:55,623 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:55,630 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:55,646 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:55,647 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:55,666 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:55,678 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:55,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:56,096 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:56,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869833016] [2021-05-03 00:30:56,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1869833016] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:56,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:56,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-03 00:30:56,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116217307] [2021-05-03 00:30:56,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-03 00:30:56,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:56,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-03 00:30:56,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-05-03 00:30:56,097 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:57,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:57,101 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2021-05-03 00:30:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-03 00:30:57,101 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-05-03 00:30:57,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:57,102 INFO L225 Difference]: With dead ends: 83 [2021-05-03 00:30:57,102 INFO L226 Difference]: Without dead ends: 72 [2021-05-03 00:30:57,102 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1029.0ms TimeCoverageRelationStatistics Valid=291, Invalid=2061, Unknown=0, NotChecked=0, Total=2352 [2021-05-03 00:30:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-03 00:30:57,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2021-05-03 00:30:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 55 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2021-05-03 00:30:57,119 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 56 [2021-05-03 00:30:57,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:57,120 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2021-05-03 00:30:57,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 25 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:57,120 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2021-05-03 00:30:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-03 00:30:57,120 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:57,120 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:57,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-03 00:30:57,120 INFO L428 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash 844336788, now seen corresponding path program 19 times [2021-05-03 00:30:57,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:57,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774613433] [2021-05-03 00:30:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:57,218 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1193) (< v_main_~c~0_512 5)) InVars {main_~c~0=v_main_~c~0_512, main_~d~0=v_main_~d~0_1193} OutVars{main_~c~0=v_main_~c~0_512, main_~d~0=v_main_~d~0_1193} AuxVars[] AssignedVars[] [2021-05-03 00:30:57,219 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:57,232 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:57,234 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:57,245 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:57,262 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1195 5) InVars {main_~d~0=v_main_~d~0_1195} OutVars{main_~d~0=v_main_~d~0_1195} AuxVars[] AssignedVars[] [2021-05-03 00:30:57,263 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:57,264 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:57,268 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:57,287 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:57,297 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:57,298 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:57,305 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:57,310 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:57,313 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1193) (< v_main_~c~0_512 5)) InVars {main_~c~0=v_main_~c~0_512, main_~d~0=v_main_~d~0_1193} OutVars{main_~c~0=v_main_~c~0_512, main_~d~0=v_main_~d~0_1193} AuxVars[] AssignedVars[] [2021-05-03 00:30:57,314 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:57,315 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:57,317 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:57,337 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:57,354 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1195 5) InVars {main_~d~0=v_main_~d~0_1195} OutVars{main_~d~0=v_main_~d~0_1195} AuxVars[] AssignedVars[] [2021-05-03 00:30:57,355 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:57,356 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:57,362 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:57,374 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:57,385 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:57,385 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:57,392 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:30:57,398 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:57,402 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1193) (< v_main_~c~0_512 5)) InVars {main_~c~0=v_main_~c~0_512, main_~d~0=v_main_~d~0_1193} OutVars{main_~c~0=v_main_~c~0_512, main_~d~0=v_main_~d~0_1193} AuxVars[] AssignedVars[] [2021-05-03 00:30:57,403 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:57,432 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:57,435 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:57,443 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:57,468 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1195 5) InVars {main_~d~0=v_main_~d~0_1195} OutVars{main_~d~0=v_main_~d~0_1195} AuxVars[] AssignedVars[] [2021-05-03 00:30:57,470 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:57,474 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:57,478 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:57,489 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:57,502 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:57,503 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:57,522 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:57,533 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:57,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:30:58,033 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:30:58,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774613433] [2021-05-03 00:30:58,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [774613433] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:30:58,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:30:58,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-03 00:30:58,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454114788] [2021-05-03 00:30:58,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-03 00:30:58,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:30:58,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-03 00:30:58,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-05-03 00:30:58,035 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:59,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:30:59,126 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2021-05-03 00:30:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-03 00:30:59,126 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-05-03 00:30:59,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:30:59,127 INFO L225 Difference]: With dead ends: 87 [2021-05-03 00:30:59,127 INFO L226 Difference]: Without dead ends: 76 [2021-05-03 00:30:59,128 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1135.9ms TimeCoverageRelationStatistics Valid=303, Invalid=2247, Unknown=0, NotChecked=0, Total=2550 [2021-05-03 00:30:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-03 00:30:59,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2021-05-03 00:30:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-05-03 00:30:59,146 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 58 [2021-05-03 00:30:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:30:59,146 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-05-03 00:30:59,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:30:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-05-03 00:30:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-03 00:30:59,146 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:30:59,146 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:30:59,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-03 00:30:59,147 INFO L428 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:30:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:30:59,147 INFO L82 PathProgramCache]: Analyzing trace with hash -407343246, now seen corresponding path program 20 times [2021-05-03 00:30:59,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:30:59,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272640954] [2021-05-03 00:30:59,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:30:59,254 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1296) (< v_main_~c~0_548 5)) InVars {main_~c~0=v_main_~c~0_548, main_~d~0=v_main_~d~0_1296} OutVars{main_~c~0=v_main_~c~0_548, main_~d~0=v_main_~d~0_1296} AuxVars[] AssignedVars[] [2021-05-03 00:30:59,255 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:59,256 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:59,259 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:59,279 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:59,302 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1298 5) InVars {main_~d~0=v_main_~d~0_1298} OutVars{main_~d~0=v_main_~d~0_1298} AuxVars[] AssignedVars[] [2021-05-03 00:30:59,304 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:59,312 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:59,319 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:59,326 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:59,336 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:59,339 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1296) (< v_main_~c~0_548 5)) InVars {main_~c~0=v_main_~c~0_548, main_~d~0=v_main_~d~0_1296} OutVars{main_~c~0=v_main_~c~0_548, main_~d~0=v_main_~d~0_1296} AuxVars[] AssignedVars[] [2021-05-03 00:30:59,340 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:59,361 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:59,363 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:59,374 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:59,391 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1298 5) InVars {main_~d~0=v_main_~d~0_1298} OutVars{main_~d~0=v_main_~d~0_1298} AuxVars[] AssignedVars[] [2021-05-03 00:30:59,392 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:59,393 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:59,397 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:59,408 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:59,418 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:30:59,421 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1296) (< v_main_~c~0_548 5)) InVars {main_~c~0=v_main_~c~0_548, main_~d~0=v_main_~d~0_1296} OutVars{main_~c~0=v_main_~c~0_548, main_~d~0=v_main_~d~0_1296} AuxVars[] AssignedVars[] [2021-05-03 00:30:59,422 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:30:59,423 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:59,425 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:30:59,445 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:30:59,462 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1298 5) InVars {main_~d~0=v_main_~d~0_1298} OutVars{main_~d~0=v_main_~d~0_1298} AuxVars[] AssignedVars[] [2021-05-03 00:30:59,463 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:30:59,470 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:59,474 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:30:59,479 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:30:59,497 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:30:59,498 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:30:59,518 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:30:59,530 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:30:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:30:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:30:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:00,128 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:00,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272640954] [2021-05-03 00:31:00,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [272640954] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:00,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:00,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-03 00:31:00,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393550771] [2021-05-03 00:31:00,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-03 00:31:00,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:00,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-03 00:31:00,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2021-05-03 00:31:00,130 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:01,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:01,284 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2021-05-03 00:31:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-03 00:31:01,284 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2021-05-03 00:31:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:01,285 INFO L225 Difference]: With dead ends: 88 [2021-05-03 00:31:01,285 INFO L226 Difference]: Without dead ends: 77 [2021-05-03 00:31:01,286 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1282.3ms TimeCoverageRelationStatistics Valid=315, Invalid=2441, Unknown=0, NotChecked=0, Total=2756 [2021-05-03 00:31:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-03 00:31:01,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2021-05-03 00:31:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-05-03 00:31:01,307 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 60 [2021-05-03 00:31:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:01,307 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-05-03 00:31:01,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 27 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-05-03 00:31:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-03 00:31:01,307 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:01,308 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:01,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-03 00:31:01,308 INFO L428 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:01,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:01,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2010555621, now seen corresponding path program 21 times [2021-05-03 00:31:01,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:01,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169645440] [2021-05-03 00:31:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:01,411 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_577 5) (<= 5 v_main_~d~0_1390)) InVars {main_~c~0=v_main_~c~0_577, main_~d~0=v_main_~d~0_1390} OutVars{main_~c~0=v_main_~c~0_577, main_~d~0=v_main_~d~0_1390} AuxVars[] AssignedVars[] [2021-05-03 00:31:01,412 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:01,413 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:01,415 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:01,434 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:01,451 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1392 5) InVars {main_~d~0=v_main_~d~0_1392} OutVars{main_~d~0=v_main_~d~0_1392} AuxVars[] AssignedVars[] [2021-05-03 00:31:01,451 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:01,452 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:01,456 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:01,467 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:01,477 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:01,477 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:01,483 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:31:01,487 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:01,490 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_577 5) (<= 5 v_main_~d~0_1390)) InVars {main_~c~0=v_main_~c~0_577, main_~d~0=v_main_~d~0_1390} OutVars{main_~c~0=v_main_~c~0_577, main_~d~0=v_main_~d~0_1390} AuxVars[] AssignedVars[] [2021-05-03 00:31:01,491 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:01,491 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:01,497 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:01,517 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:01,533 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1392 5) InVars {main_~d~0=v_main_~d~0_1392} OutVars{main_~d~0=v_main_~d~0_1392} AuxVars[] AssignedVars[] [2021-05-03 00:31:01,534 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:01,548 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:01,560 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:01,566 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:01,576 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:01,577 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:01,582 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:31:01,586 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:01,589 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_577 5) (<= 5 v_main_~d~0_1390)) InVars {main_~c~0=v_main_~c~0_577, main_~d~0=v_main_~d~0_1390} OutVars{main_~c~0=v_main_~c~0_577, main_~d~0=v_main_~d~0_1390} AuxVars[] AssignedVars[] [2021-05-03 00:31:01,590 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:01,603 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:01,606 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:01,614 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:01,631 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1392 5) InVars {main_~d~0=v_main_~d~0_1392} OutVars{main_~d~0=v_main_~d~0_1392} AuxVars[] AssignedVars[] [2021-05-03 00:31:01,631 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:01,632 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:01,636 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:01,647 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:01,660 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:01,660 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:01,677 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:01,687 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:02,162 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:02,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169645440] [2021-05-03 00:31:02,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1169645440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:02,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:02,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-03 00:31:02,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824304963] [2021-05-03 00:31:02,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-03 00:31:02,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:02,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-03 00:31:02,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2021-05-03 00:31:02,163 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:03,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:03,428 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2021-05-03 00:31:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-03 00:31:03,429 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-03 00:31:03,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:03,430 INFO L225 Difference]: With dead ends: 90 [2021-05-03 00:31:03,430 INFO L226 Difference]: Without dead ends: 79 [2021-05-03 00:31:03,431 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1219.1ms TimeCoverageRelationStatistics Valid=327, Invalid=2643, Unknown=0, NotChecked=0, Total=2970 [2021-05-03 00:31:03,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-03 00:31:03,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2021-05-03 00:31:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-05-03 00:31:03,462 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 63 [2021-05-03 00:31:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:03,463 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-05-03 00:31:03,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-05-03 00:31:03,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-03 00:31:03,464 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:03,464 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:03,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-03 00:31:03,464 INFO L428 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:03,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:03,464 INFO L82 PathProgramCache]: Analyzing trace with hash 525153849, now seen corresponding path program 22 times [2021-05-03 00:31:03,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:03,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640551911] [2021-05-03 00:31:03,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:03,571 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1489 6) InVars {main_~d~0=v_main_~d~0_1489} OutVars{main_~d~0=v_main_~d~0_1489} AuxVars[] AssignedVars[] [2021-05-03 00:31:03,581 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:03,582 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:03,593 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:03,607 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:03,619 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_614 5) (<= 6 v_main_~d~0_1491)) InVars {main_~c~0=v_main_~c~0_614, main_~d~0=v_main_~d~0_1491} OutVars{main_~c~0=v_main_~c~0_614, main_~d~0=v_main_~d~0_1491} AuxVars[] AssignedVars[] [2021-05-03 00:31:03,620 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:31:03,621 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:03,624 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:03,647 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:31:03,667 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:03,668 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:03,677 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:03,683 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:03,686 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1489 6) InVars {main_~d~0=v_main_~d~0_1489} OutVars{main_~d~0=v_main_~d~0_1489} AuxVars[] AssignedVars[] [2021-05-03 00:31:03,687 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:03,695 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:03,699 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:03,706 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:03,726 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_614 5) (<= 6 v_main_~d~0_1491)) InVars {main_~c~0=v_main_~c~0_614, main_~d~0=v_main_~d~0_1491} OutVars{main_~c~0=v_main_~c~0_614, main_~d~0=v_main_~d~0_1491} AuxVars[] AssignedVars[] [2021-05-03 00:31:03,727 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:31:03,728 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:03,730 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:03,750 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:31:03,769 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:03,769 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:03,777 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:03,784 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:03,786 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1489 6) InVars {main_~d~0=v_main_~d~0_1489} OutVars{main_~d~0=v_main_~d~0_1489} AuxVars[] AssignedVars[] [2021-05-03 00:31:03,788 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:03,788 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:03,793 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:03,806 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:03,818 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_614 5) (<= 6 v_main_~d~0_1491)) InVars {main_~c~0=v_main_~c~0_614, main_~d~0=v_main_~d~0_1491} OutVars{main_~c~0=v_main_~c~0_614, main_~d~0=v_main_~d~0_1491} AuxVars[] AssignedVars[] [2021-05-03 00:31:03,819 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:31:03,832 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:03,835 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:03,843 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:31:03,867 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:03,867 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:03,887 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:03,899 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:03,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:04,529 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:04,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640551911] [2021-05-03 00:31:04,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1640551911] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:04,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:04,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-03 00:31:04,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111880493] [2021-05-03 00:31:04,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-03 00:31:04,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:04,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-03 00:31:04,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2021-05-03 00:31:04,531 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:05,916 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2021-05-03 00:31:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-03 00:31:05,917 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-05-03 00:31:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:05,917 INFO L225 Difference]: With dead ends: 92 [2021-05-03 00:31:05,917 INFO L226 Difference]: Without dead ends: 81 [2021-05-03 00:31:05,918 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 10 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1396.3ms TimeCoverageRelationStatistics Valid=339, Invalid=2853, Unknown=0, NotChecked=0, Total=3192 [2021-05-03 00:31:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-03 00:31:05,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 68. [2021-05-03 00:31:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:05,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2021-05-03 00:31:05,940 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 65 [2021-05-03 00:31:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:05,940 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2021-05-03 00:31:05,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 29 states have internal predecessors, (62), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2021-05-03 00:31:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-03 00:31:05,940 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:05,940 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:05,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-03 00:31:05,941 INFO L428 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:05,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:05,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2095497687, now seen corresponding path program 23 times [2021-05-03 00:31:05,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:05,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737515111] [2021-05-03 00:31:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:06,035 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1602) (< v_main_~c~0_655 5)) InVars {main_~c~0=v_main_~c~0_655, main_~d~0=v_main_~d~0_1602} OutVars{main_~c~0=v_main_~c~0_655, main_~d~0=v_main_~d~0_1602} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,036 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:06,037 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,039 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:06,059 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:06,077 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1604 5) InVars {main_~d~0=v_main_~d~0_1604} OutVars{main_~d~0=v_main_~d~0_1604} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,078 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:06,079 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,083 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:06,094 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:06,118 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,119 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,128 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:06,136 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_664 6) InVars {main_~c~0=v_main_~c~0_664} OutVars{main_~c~0=v_main_~c~0_664} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,138 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:06,138 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,144 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:06,163 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:06,181 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1602) (< v_main_~c~0_655 5)) InVars {main_~c~0=v_main_~c~0_655, main_~d~0=v_main_~d~0_1602} OutVars{main_~c~0=v_main_~c~0_655, main_~d~0=v_main_~d~0_1602} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,182 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:06,183 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,185 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:06,208 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:06,228 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1604 5) InVars {main_~d~0=v_main_~d~0_1604} OutVars{main_~d~0=v_main_~d~0_1604} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,229 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:06,229 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,238 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:06,252 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:06,264 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,264 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,273 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:06,281 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_664 6) InVars {main_~c~0=v_main_~c~0_664} OutVars{main_~c~0=v_main_~c~0_664} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,282 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:06,283 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,288 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:06,307 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:06,327 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1602) (< v_main_~c~0_655 5)) InVars {main_~c~0=v_main_~c~0_655, main_~d~0=v_main_~d~0_1602} OutVars{main_~c~0=v_main_~c~0_655, main_~d~0=v_main_~d~0_1602} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,329 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:06,330 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,332 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:06,352 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:06,375 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1604 5) InVars {main_~d~0=v_main_~d~0_1604} OutVars{main_~d~0=v_main_~d~0_1604} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,376 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:06,384 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,388 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:06,394 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:06,407 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:06,408 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:06,424 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:06,435 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:06,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:07,065 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:07,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737515111] [2021-05-03 00:31:07,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1737515111] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:07,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:07,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-03 00:31:07,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485833951] [2021-05-03 00:31:07,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-03 00:31:07,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:07,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-03 00:31:07,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2021-05-03 00:31:07,066 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:08,463 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2021-05-03 00:31:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-03 00:31:08,463 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-05-03 00:31:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:08,464 INFO L225 Difference]: With dead ends: 94 [2021-05-03 00:31:08,464 INFO L226 Difference]: Without dead ends: 83 [2021-05-03 00:31:08,464 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1440.7ms TimeCoverageRelationStatistics Valid=351, Invalid=3071, Unknown=0, NotChecked=0, Total=3422 [2021-05-03 00:31:08,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-03 00:31:08,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2021-05-03 00:31:08,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-05-03 00:31:08,485 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 67 [2021-05-03 00:31:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:08,485 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-05-03 00:31:08,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-05-03 00:31:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-03 00:31:08,486 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:08,486 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:08,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-03 00:31:08,486 INFO L428 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:08,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:08,486 INFO L82 PathProgramCache]: Analyzing trace with hash -632562187, now seen corresponding path program 24 times [2021-05-03 00:31:08,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:08,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277762922] [2021-05-03 00:31:08,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:08,580 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1718) (< v_main_~c~0_694 5)) InVars {main_~c~0=v_main_~c~0_694, main_~d~0=v_main_~d~0_1718} OutVars{main_~c~0=v_main_~c~0_694, main_~d~0=v_main_~d~0_1718} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,582 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:08,582 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:08,584 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:08,604 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:08,622 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1720 5) InVars {main_~d~0=v_main_~d~0_1720} OutVars{main_~d~0=v_main_~d~0_1720} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,623 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:08,629 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:08,633 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:08,639 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:08,651 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_701 6) InVars {main_~c~0=v_main_~c~0_701} OutVars{main_~c~0=v_main_~c~0_701} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,652 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:08,681 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:08,689 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:08,698 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:08,714 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,715 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:08,723 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:08,733 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1718) (< v_main_~c~0_694 5)) InVars {main_~c~0=v_main_~c~0_694, main_~d~0=v_main_~d~0_1718} OutVars{main_~c~0=v_main_~c~0_694, main_~d~0=v_main_~d~0_1718} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,735 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:08,736 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:08,738 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:08,760 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:08,777 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1720 5) InVars {main_~d~0=v_main_~d~0_1720} OutVars{main_~d~0=v_main_~d~0_1720} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,785 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:08,792 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:08,796 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:08,801 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:08,815 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_701 6) InVars {main_~c~0=v_main_~c~0_701} OutVars{main_~c~0=v_main_~c~0_701} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,817 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:08,817 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:08,822 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:08,846 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:08,860 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,861 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:08,868 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:08,882 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_1718) (< v_main_~c~0_694 5)) InVars {main_~c~0=v_main_~c~0_694, main_~d~0=v_main_~d~0_1718} OutVars{main_~c~0=v_main_~c~0_694, main_~d~0=v_main_~d~0_1718} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,883 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:08,884 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:08,886 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:08,924 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:08,947 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1720 5) InVars {main_~d~0=v_main_~d~0_1720} OutVars{main_~d~0=v_main_~d~0_1720} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,948 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:08,956 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:08,960 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:08,966 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:08,998 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:08,999 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:09,018 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:09,038 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:09,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:09,687 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:09,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277762922] [2021-05-03 00:31:09,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1277762922] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:09,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:09,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-03 00:31:09,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215458017] [2021-05-03 00:31:09,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-03 00:31:09,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:09,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-03 00:31:09,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2021-05-03 00:31:09,688 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:11,248 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2021-05-03 00:31:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-03 00:31:11,248 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-03 00:31:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:11,249 INFO L225 Difference]: With dead ends: 96 [2021-05-03 00:31:11,249 INFO L226 Difference]: Without dead ends: 85 [2021-05-03 00:31:11,250 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 32 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1513.0ms TimeCoverageRelationStatistics Valid=363, Invalid=3297, Unknown=0, NotChecked=0, Total=3660 [2021-05-03 00:31:11,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-03 00:31:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2021-05-03 00:31:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 68 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2021-05-03 00:31:11,274 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 69 [2021-05-03 00:31:11,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:11,274 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2021-05-03 00:31:11,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 31 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:11,274 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2021-05-03 00:31:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-03 00:31:11,274 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:11,274 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:11,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-03 00:31:11,274 INFO L428 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:11,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:11,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1926916755, now seen corresponding path program 25 times [2021-05-03 00:31:11,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:11,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203793841] [2021-05-03 00:31:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:11,387 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_733 5) (<= 5 v_main_~d~0_1838)) InVars {main_~c~0=v_main_~c~0_733, main_~d~0=v_main_~d~0_1838} OutVars{main_~c~0=v_main_~c~0_733, main_~d~0=v_main_~d~0_1838} AuxVars[] AssignedVars[] [2021-05-03 00:31:11,389 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:11,405 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:11,407 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:11,415 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:11,432 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1840 5) InVars {main_~d~0=v_main_~d~0_1840} OutVars{main_~d~0=v_main_~d~0_1840} AuxVars[] AssignedVars[] [2021-05-03 00:31:11,433 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:11,439 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:11,443 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:11,449 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:11,460 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:11,460 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:11,468 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:11,473 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:11,476 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_733 5) (<= 5 v_main_~d~0_1838)) InVars {main_~c~0=v_main_~c~0_733, main_~d~0=v_main_~d~0_1838} OutVars{main_~c~0=v_main_~c~0_733, main_~d~0=v_main_~d~0_1838} AuxVars[] AssignedVars[] [2021-05-03 00:31:11,477 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:11,490 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:11,492 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:11,501 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:11,517 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1840 5) InVars {main_~d~0=v_main_~d~0_1840} OutVars{main_~d~0=v_main_~d~0_1840} AuxVars[] AssignedVars[] [2021-05-03 00:31:11,518 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:11,518 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:11,522 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:11,533 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:11,543 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:11,544 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:11,551 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:11,556 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:11,560 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_733 5) (<= 5 v_main_~d~0_1838)) InVars {main_~c~0=v_main_~c~0_733, main_~d~0=v_main_~d~0_1838} OutVars{main_~c~0=v_main_~c~0_733, main_~d~0=v_main_~d~0_1838} AuxVars[] AssignedVars[] [2021-05-03 00:31:11,561 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:11,574 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:11,579 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:11,588 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:11,604 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1840 5) InVars {main_~d~0=v_main_~d~0_1840} OutVars{main_~d~0=v_main_~d~0_1840} AuxVars[] AssignedVars[] [2021-05-03 00:31:11,605 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:11,606 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:11,610 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:11,621 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:11,634 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:11,635 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:11,651 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:11,678 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:11,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:12,393 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:12,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203793841] [2021-05-03 00:31:12,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1203793841] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:12,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:12,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-03 00:31:12,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130092623] [2021-05-03 00:31:12,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-03 00:31:12,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:12,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-03 00:31:12,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2021-05-03 00:31:12,395 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:13,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:13,932 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2021-05-03 00:31:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-03 00:31:13,933 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-03 00:31:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:13,933 INFO L225 Difference]: With dead ends: 98 [2021-05-03 00:31:13,933 INFO L226 Difference]: Without dead ends: 87 [2021-05-03 00:31:13,934 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 29 SyntacticMatches, 12 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1627.2ms TimeCoverageRelationStatistics Valid=375, Invalid=3531, Unknown=0, NotChecked=0, Total=3906 [2021-05-03 00:31:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-03 00:31:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 74. [2021-05-03 00:31:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-05-03 00:31:13,962 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 71 [2021-05-03 00:31:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:13,962 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-05-03 00:31:13,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.0606060606060606) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-05-03 00:31:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-03 00:31:13,963 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:13,963 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:13,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-03 00:31:13,963 INFO L428 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:13,963 INFO L82 PathProgramCache]: Analyzing trace with hash 569919409, now seen corresponding path program 26 times [2021-05-03 00:31:13,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:13,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878058360] [2021-05-03 00:31:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:14,069 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_772 5) (<= 5 v_main_~d~0_1958)) InVars {main_~c~0=v_main_~c~0_772, main_~d~0=v_main_~d~0_1958} OutVars{main_~c~0=v_main_~c~0_772, main_~d~0=v_main_~d~0_1958} AuxVars[] AssignedVars[] [2021-05-03 00:31:14,070 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:14,084 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:14,086 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:14,095 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:14,112 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1960 5) InVars {main_~d~0=v_main_~d~0_1960} OutVars{main_~d~0=v_main_~d~0_1960} AuxVars[] AssignedVars[] [2021-05-03 00:31:14,113 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:14,114 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:14,118 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:14,129 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:14,139 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:14,140 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:14,147 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:14,153 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:14,157 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_772 5) (<= 5 v_main_~d~0_1958)) InVars {main_~c~0=v_main_~c~0_772, main_~d~0=v_main_~d~0_1958} OutVars{main_~c~0=v_main_~c~0_772, main_~d~0=v_main_~d~0_1958} AuxVars[] AssignedVars[] [2021-05-03 00:31:14,158 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:14,158 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:14,161 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:14,181 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:14,198 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1960 5) InVars {main_~d~0=v_main_~d~0_1960} OutVars{main_~d~0=v_main_~d~0_1960} AuxVars[] AssignedVars[] [2021-05-03 00:31:14,199 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:14,200 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:14,204 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:14,215 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:14,226 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:14,227 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:14,234 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:14,240 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:14,245 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_772 5) (<= 5 v_main_~d~0_1958)) InVars {main_~c~0=v_main_~c~0_772, main_~d~0=v_main_~d~0_1958} OutVars{main_~c~0=v_main_~c~0_772, main_~d~0=v_main_~d~0_1958} AuxVars[] AssignedVars[] [2021-05-03 00:31:14,246 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:14,247 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:14,249 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:14,270 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:14,288 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_1960 5) InVars {main_~d~0=v_main_~d~0_1960} OutVars{main_~d~0=v_main_~d~0_1960} AuxVars[] AssignedVars[] [2021-05-03 00:31:14,289 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:14,290 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:14,294 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:14,305 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:14,319 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:14,320 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:14,345 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:14,356 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:14,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:15,035 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:15,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878058360] [2021-05-03 00:31:15,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [878058360] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:15,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:15,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-03 00:31:15,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316341540] [2021-05-03 00:31:15,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-03 00:31:15,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:15,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-03 00:31:15,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2021-05-03 00:31:15,036 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:16,664 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2021-05-03 00:31:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-03 00:31:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-03 00:31:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:16,665 INFO L225 Difference]: With dead ends: 102 [2021-05-03 00:31:16,665 INFO L226 Difference]: Without dead ends: 91 [2021-05-03 00:31:16,666 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 1632.2ms TimeCoverageRelationStatistics Valid=387, Invalid=3773, Unknown=0, NotChecked=0, Total=4160 [2021-05-03 00:31:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-03 00:31:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2021-05-03 00:31:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-05-03 00:31:16,692 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 73 [2021-05-03 00:31:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:16,692 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-05-03 00:31:16,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 33 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:16,692 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-05-03 00:31:16,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-03 00:31:16,693 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:16,693 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:16,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-03 00:31:16,693 INFO L428 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:16,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2129439409, now seen corresponding path program 27 times [2021-05-03 00:31:16,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:16,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83842392] [2021-05-03 00:31:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:16,795 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_811 5) (<= 5 v_main_~d~0_2082)) InVars {main_~c~0=v_main_~c~0_811, main_~d~0=v_main_~d~0_2082} OutVars{main_~c~0=v_main_~c~0_811, main_~d~0=v_main_~d~0_2082} AuxVars[] AssignedVars[] [2021-05-03 00:31:16,796 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:16,810 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:16,812 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:16,821 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:16,844 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2084 5) InVars {main_~d~0=v_main_~d~0_2084} OutVars{main_~d~0=v_main_~d~0_2084} AuxVars[] AssignedVars[] [2021-05-03 00:31:16,845 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:16,845 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:16,849 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:16,860 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:16,871 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:16,874 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_811 5) (<= 5 v_main_~d~0_2082)) InVars {main_~c~0=v_main_~c~0_811, main_~d~0=v_main_~d~0_2082} OutVars{main_~c~0=v_main_~c~0_811, main_~d~0=v_main_~d~0_2082} AuxVars[] AssignedVars[] [2021-05-03 00:31:16,875 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:16,888 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:16,895 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:16,903 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:16,937 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2084 5) InVars {main_~d~0=v_main_~d~0_2084} OutVars{main_~d~0=v_main_~d~0_2084} AuxVars[] AssignedVars[] [2021-05-03 00:31:16,938 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:16,939 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:16,944 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:16,955 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:16,966 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:16,970 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_811 5) (<= 5 v_main_~d~0_2082)) InVars {main_~c~0=v_main_~c~0_811, main_~d~0=v_main_~d~0_2082} OutVars{main_~c~0=v_main_~c~0_811, main_~d~0=v_main_~d~0_2082} AuxVars[] AssignedVars[] [2021-05-03 00:31:16,971 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:16,984 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:16,987 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:16,995 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:17,012 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2084 5) InVars {main_~d~0=v_main_~d~0_2084} OutVars{main_~d~0=v_main_~d~0_2084} AuxVars[] AssignedVars[] [2021-05-03 00:31:17,013 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:17,014 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:17,018 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:17,030 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:17,044 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:17,045 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:17,062 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:17,072 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:17,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:17,838 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:17,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83842392] [2021-05-03 00:31:17,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [83842392] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:17,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:17,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-03 00:31:17,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341686469] [2021-05-03 00:31:17,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-03 00:31:17,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:17,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-03 00:31:17,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2021-05-03 00:31:17,839 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:19,585 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-05-03 00:31:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-03 00:31:19,585 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2021-05-03 00:31:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:19,585 INFO L225 Difference]: With dead ends: 103 [2021-05-03 00:31:19,585 INFO L226 Difference]: Without dead ends: 92 [2021-05-03 00:31:19,586 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 1719.7ms TimeCoverageRelationStatistics Valid=399, Invalid=4023, Unknown=0, NotChecked=0, Total=4422 [2021-05-03 00:31:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-03 00:31:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2021-05-03 00:31:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 76 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2021-05-03 00:31:19,617 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 75 [2021-05-03 00:31:19,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:19,617 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2021-05-03 00:31:19,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:19,618 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2021-05-03 00:31:19,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-03 00:31:19,618 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:19,618 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:19,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-03 00:31:19,618 INFO L428 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:19,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:19,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1592996834, now seen corresponding path program 28 times [2021-05-03 00:31:19,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:19,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411499350] [2021-05-03 00:31:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:19,718 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_2197) (< v_main_~c~0_843 5)) InVars {main_~c~0=v_main_~c~0_843, main_~d~0=v_main_~d~0_2197} OutVars{main_~c~0=v_main_~c~0_843, main_~d~0=v_main_~d~0_2197} AuxVars[] AssignedVars[] [2021-05-03 00:31:19,720 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:19,733 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:19,735 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:19,746 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:19,764 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2199 5) InVars {main_~d~0=v_main_~d~0_2199} OutVars{main_~d~0=v_main_~d~0_2199} AuxVars[] AssignedVars[] [2021-05-03 00:31:19,764 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:19,765 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:19,769 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:19,780 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:19,790 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:19,791 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:19,802 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:31:19,807 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:19,810 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_2197) (< v_main_~c~0_843 5)) InVars {main_~c~0=v_main_~c~0_843, main_~d~0=v_main_~d~0_2197} OutVars{main_~c~0=v_main_~c~0_843, main_~d~0=v_main_~d~0_2197} AuxVars[] AssignedVars[] [2021-05-03 00:31:19,811 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:19,811 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:19,813 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:19,835 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:19,852 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2199 5) InVars {main_~d~0=v_main_~d~0_2199} OutVars{main_~d~0=v_main_~d~0_2199} AuxVars[] AssignedVars[] [2021-05-03 00:31:19,853 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:19,869 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:19,874 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:19,888 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:19,902 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:19,902 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:19,908 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:31:19,914 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:19,917 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_2197) (< v_main_~c~0_843 5)) InVars {main_~c~0=v_main_~c~0_843, main_~d~0=v_main_~d~0_2197} OutVars{main_~c~0=v_main_~c~0_843, main_~d~0=v_main_~d~0_2197} AuxVars[] AssignedVars[] [2021-05-03 00:31:19,919 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:19,919 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:19,922 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:19,942 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:19,959 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2199 5) InVars {main_~d~0=v_main_~d~0_2199} OutVars{main_~d~0=v_main_~d~0_2199} AuxVars[] AssignedVars[] [2021-05-03 00:31:19,960 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:19,966 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:19,972 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:19,978 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:19,992 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:19,995 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:20,013 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:20,025 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:20,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:20,877 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:20,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411499350] [2021-05-03 00:31:20,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [411499350] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:20,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:20,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-03 00:31:20,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158251040] [2021-05-03 00:31:20,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-03 00:31:20,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:20,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-03 00:31:20,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2021-05-03 00:31:20,879 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:22,753 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2021-05-03 00:31:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-03 00:31:22,753 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2021-05-03 00:31:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:22,754 INFO L225 Difference]: With dead ends: 105 [2021-05-03 00:31:22,754 INFO L226 Difference]: Without dead ends: 94 [2021-05-03 00:31:22,755 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 32 SyntacticMatches, 13 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1887.1ms TimeCoverageRelationStatistics Valid=411, Invalid=4281, Unknown=0, NotChecked=0, Total=4692 [2021-05-03 00:31:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-03 00:31:22,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2021-05-03 00:31:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2021-05-03 00:31:22,785 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 78 [2021-05-03 00:31:22,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:22,785 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2021-05-03 00:31:22,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 35 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2021-05-03 00:31:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-03 00:31:22,786 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:22,786 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:22,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-03 00:31:22,786 INFO L428 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:22,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1927777668, now seen corresponding path program 29 times [2021-05-03 00:31:22,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:22,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606719306] [2021-05-03 00:31:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:22,886 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2317 6) InVars {main_~d~0=v_main_~d~0_2317} OutVars{main_~d~0=v_main_~d~0_2317} AuxVars[] AssignedVars[] [2021-05-03 00:31:22,887 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:22,893 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:22,897 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:22,903 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:22,913 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_883 5) (<= 6 v_main_~d~0_2319)) InVars {main_~c~0=v_main_~c~0_883, main_~d~0=v_main_~d~0_2319} OutVars{main_~c~0=v_main_~c~0_883, main_~d~0=v_main_~d~0_2319} AuxVars[] AssignedVars[] [2021-05-03 00:31:22,914 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:31:22,915 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:22,917 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:22,934 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:31:22,950 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:22,951 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:22,958 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:22,964 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:22,981 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2317 6) InVars {main_~d~0=v_main_~d~0_2317} OutVars{main_~d~0=v_main_~d~0_2317} AuxVars[] AssignedVars[] [2021-05-03 00:31:22,983 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:22,983 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:22,992 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:23,006 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:23,019 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_883 5) (<= 6 v_main_~d~0_2319)) InVars {main_~c~0=v_main_~c~0_883, main_~d~0=v_main_~d~0_2319} OutVars{main_~c~0=v_main_~c~0_883, main_~d~0=v_main_~d~0_2319} AuxVars[] AssignedVars[] [2021-05-03 00:31:23,021 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:31:23,034 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:23,036 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:23,045 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:31:23,064 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:23,065 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:23,073 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:23,079 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:23,081 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2317 6) InVars {main_~d~0=v_main_~d~0_2317} OutVars{main_~d~0=v_main_~d~0_2317} AuxVars[] AssignedVars[] [2021-05-03 00:31:23,082 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:23,088 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:23,092 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:23,101 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:23,112 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_883 5) (<= 6 v_main_~d~0_2319)) InVars {main_~c~0=v_main_~c~0_883, main_~d~0=v_main_~d~0_2319} OutVars{main_~c~0=v_main_~c~0_883, main_~d~0=v_main_~d~0_2319} AuxVars[] AssignedVars[] [2021-05-03 00:31:23,113 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:31:23,124 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:23,126 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:23,133 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:31:23,153 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:23,154 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:23,171 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:23,181 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:24,011 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:24,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606719306] [2021-05-03 00:31:24,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [606719306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:24,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:24,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-05-03 00:31:24,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377726924] [2021-05-03 00:31:24,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-03 00:31:24,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:24,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-03 00:31:24,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2021-05-03 00:31:24,013 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 36 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:25,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:25,922 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2021-05-03 00:31:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-03 00:31:25,923 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 36 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2021-05-03 00:31:25,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:25,923 INFO L225 Difference]: With dead ends: 107 [2021-05-03 00:31:25,923 INFO L226 Difference]: Without dead ends: 96 [2021-05-03 00:31:25,924 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 1920.3ms TimeCoverageRelationStatistics Valid=423, Invalid=4547, Unknown=0, NotChecked=0, Total=4970 [2021-05-03 00:31:25,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-03 00:31:25,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2021-05-03 00:31:25,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:25,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2021-05-03 00:31:25,951 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 80 [2021-05-03 00:31:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:25,951 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2021-05-03 00:31:25,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 36 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2021-05-03 00:31:25,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-05-03 00:31:25,952 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:25,952 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:25,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-03 00:31:25,952 INFO L428 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:25,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:25,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1529611942, now seen corresponding path program 30 times [2021-05-03 00:31:25,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:25,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93498400] [2021-05-03 00:31:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:26,050 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_927 5) (<= 5 v_main_~d~0_2451)) InVars {main_~c~0=v_main_~c~0_927, main_~d~0=v_main_~d~0_2451} OutVars{main_~c~0=v_main_~c~0_927, main_~d~0=v_main_~d~0_2451} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,051 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:26,064 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,071 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:26,079 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:26,096 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2453 5) InVars {main_~d~0=v_main_~d~0_2453} OutVars{main_~d~0=v_main_~d~0_2453} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,097 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:26,098 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,101 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:26,112 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:26,123 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,123 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,131 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:26,138 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_937 6) InVars {main_~c~0=v_main_~c~0_937} OutVars{main_~c~0=v_main_~c~0_937} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,139 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:26,150 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,154 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:26,162 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:26,177 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_927 5) (<= 5 v_main_~d~0_2451)) InVars {main_~c~0=v_main_~c~0_927, main_~d~0=v_main_~d~0_2451} OutVars{main_~c~0=v_main_~c~0_927, main_~d~0=v_main_~d~0_2451} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,178 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:26,179 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,181 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:26,200 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:26,218 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2453 5) InVars {main_~d~0=v_main_~d~0_2453} OutVars{main_~d~0=v_main_~d~0_2453} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,219 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:26,225 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,229 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:26,234 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:26,244 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,245 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,252 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:26,260 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_937 6) InVars {main_~c~0=v_main_~c~0_937} OutVars{main_~c~0=v_main_~c~0_937} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,277 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:26,278 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,284 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:26,304 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:26,321 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_927 5) (<= 5 v_main_~d~0_2451)) InVars {main_~c~0=v_main_~c~0_927, main_~d~0=v_main_~d~0_2451} OutVars{main_~c~0=v_main_~c~0_927, main_~d~0=v_main_~d~0_2451} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,322 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:26,337 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,339 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:26,348 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:26,365 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2453 5) InVars {main_~d~0=v_main_~d~0_2453} OutVars{main_~d~0=v_main_~d~0_2453} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,366 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:26,372 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,376 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:26,382 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:26,401 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:26,402 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:26,422 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:26,433 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:26,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:27,339 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:27,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93498400] [2021-05-03 00:31:27,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [93498400] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:27,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:27,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-03 00:31:27,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363525616] [2021-05-03 00:31:27,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-03 00:31:27,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:27,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-03 00:31:27,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2021-05-03 00:31:27,341 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:29,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:29,495 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2021-05-03 00:31:29,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-03 00:31:29,495 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2021-05-03 00:31:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:29,496 INFO L225 Difference]: With dead ends: 109 [2021-05-03 00:31:29,496 INFO L226 Difference]: Without dead ends: 98 [2021-05-03 00:31:29,497 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 32 SyntacticMatches, 15 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 2043.7ms TimeCoverageRelationStatistics Valid=435, Invalid=4821, Unknown=0, NotChecked=0, Total=5256 [2021-05-03 00:31:29,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-03 00:31:29,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2021-05-03 00:31:29,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 81 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2021-05-03 00:31:29,527 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 82 [2021-05-03 00:31:29,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:29,527 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2021-05-03 00:31:29,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 37 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2021-05-03 00:31:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-05-03 00:31:29,528 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:29,528 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:29,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-03 00:31:29,528 INFO L428 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:29,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:29,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1144438600, now seen corresponding path program 31 times [2021-05-03 00:31:29,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:29,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268788125] [2021-05-03 00:31:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:29,654 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_969 5) (<= 5 v_main_~d~0_2588)) InVars {main_~c~0=v_main_~c~0_969, main_~d~0=v_main_~d~0_2588} OutVars{main_~c~0=v_main_~c~0_969, main_~d~0=v_main_~d~0_2588} AuxVars[] AssignedVars[] [2021-05-03 00:31:29,655 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:29,668 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:29,670 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:29,678 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:29,695 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2590 5) InVars {main_~d~0=v_main_~d~0_2590} OutVars{main_~d~0=v_main_~d~0_2590} AuxVars[] AssignedVars[] [2021-05-03 00:31:29,696 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:29,705 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:29,709 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:29,715 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:29,725 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:29,726 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:29,726 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:29,734 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:29,742 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_969 5) (<= 5 v_main_~d~0_2588)) InVars {main_~c~0=v_main_~c~0_969, main_~d~0=v_main_~d~0_2588} OutVars{main_~c~0=v_main_~c~0_969, main_~d~0=v_main_~d~0_2588} AuxVars[] AssignedVars[] [2021-05-03 00:31:29,743 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:29,744 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:29,746 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:29,766 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:29,786 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2590 5) InVars {main_~d~0=v_main_~d~0_2590} OutVars{main_~d~0=v_main_~d~0_2590} AuxVars[] AssignedVars[] [2021-05-03 00:31:29,787 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:29,794 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:29,797 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:29,803 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:29,815 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:29,816 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:29,816 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:29,823 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:29,834 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_969 5) (<= 5 v_main_~d~0_2588)) InVars {main_~c~0=v_main_~c~0_969, main_~d~0=v_main_~d~0_2588} OutVars{main_~c~0=v_main_~c~0_969, main_~d~0=v_main_~d~0_2588} AuxVars[] AssignedVars[] [2021-05-03 00:31:29,835 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:29,835 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:29,841 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:29,861 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:29,878 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2590 5) InVars {main_~d~0=v_main_~d~0_2590} OutVars{main_~d~0=v_main_~d~0_2590} AuxVars[] AssignedVars[] [2021-05-03 00:31:29,879 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:29,885 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:29,889 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:29,894 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:29,908 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:29,909 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:29,926 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:29,936 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:29,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:30,769 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:30,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268788125] [2021-05-03 00:31:30,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1268788125] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:30,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:30,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-05-03 00:31:30,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038855185] [2021-05-03 00:31:30,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-03 00:31:30,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:30,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-03 00:31:30,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-05-03 00:31:30,771 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:32,950 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2021-05-03 00:31:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-03 00:31:32,950 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2021-05-03 00:31:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:32,950 INFO L225 Difference]: With dead ends: 111 [2021-05-03 00:31:32,951 INFO L226 Difference]: Without dead ends: 100 [2021-05-03 00:31:32,951 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 40 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 2077.3ms TimeCoverageRelationStatistics Valid=447, Invalid=5103, Unknown=0, NotChecked=0, Total=5550 [2021-05-03 00:31:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-03 00:31:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2021-05-03 00:31:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 83 states have internal predecessors, (87), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2021-05-03 00:31:32,981 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 84 [2021-05-03 00:31:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:32,982 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2021-05-03 00:31:32,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 38 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2021-05-03 00:31:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-03 00:31:32,982 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:32,982 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:32,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-03 00:31:32,982 INFO L428 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:32,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:32,983 INFO L82 PathProgramCache]: Analyzing trace with hash -360044394, now seen corresponding path program 32 times [2021-05-03 00:31:32,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:32,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005975083] [2021-05-03 00:31:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:33,079 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1011 5) (<= 5 v_main_~d~0_2725)) InVars {main_~c~0=v_main_~c~0_1011, main_~d~0=v_main_~d~0_2725} OutVars{main_~c~0=v_main_~c~0_1011, main_~d~0=v_main_~d~0_2725} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,080 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:33,099 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,101 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:33,110 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:33,127 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2727 5) InVars {main_~d~0=v_main_~d~0_2727} OutVars{main_~d~0=v_main_~d~0_2727} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,128 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:33,129 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,138 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:33,149 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:33,160 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,160 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,167 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:33,176 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1021 6) InVars {main_~c~0=v_main_~c~0_1021} OutVars{main_~c~0=v_main_~c~0_1021} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,176 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:33,187 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,191 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:33,199 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:33,215 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1011 5) (<= 5 v_main_~d~0_2725)) InVars {main_~c~0=v_main_~c~0_1011, main_~d~0=v_main_~d~0_2725} OutVars{main_~c~0=v_main_~c~0_1011, main_~d~0=v_main_~d~0_2725} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,217 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:33,235 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,238 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:33,249 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:33,272 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2727 5) InVars {main_~d~0=v_main_~d~0_2727} OutVars{main_~d~0=v_main_~d~0_2727} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,273 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:33,274 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,278 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:33,289 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:33,300 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,301 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,308 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:33,315 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1021 6) InVars {main_~c~0=v_main_~c~0_1021} OutVars{main_~c~0=v_main_~c~0_1021} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,315 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:33,326 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,330 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:33,338 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:33,363 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1011 5) (<= 5 v_main_~d~0_2725)) InVars {main_~c~0=v_main_~c~0_1011, main_~d~0=v_main_~d~0_2725} OutVars{main_~c~0=v_main_~c~0_1011, main_~d~0=v_main_~d~0_2725} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,365 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:33,378 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,381 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:33,389 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:33,406 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2727 5) InVars {main_~d~0=v_main_~d~0_2727} OutVars{main_~d~0=v_main_~d~0_2727} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,407 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:33,408 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,412 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:33,424 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:33,440 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:33,441 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:33,459 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:33,471 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:34,503 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:34,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005975083] [2021-05-03 00:31:34,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1005975083] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:34,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:34,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-05-03 00:31:34,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403075159] [2021-05-03 00:31:34,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-03 00:31:34,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:34,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-03 00:31:34,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-05-03 00:31:34,504 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:36,812 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2021-05-03 00:31:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-03 00:31:36,812 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2021-05-03 00:31:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:36,813 INFO L225 Difference]: With dead ends: 113 [2021-05-03 00:31:36,813 INFO L226 Difference]: Without dead ends: 102 [2021-05-03 00:31:36,813 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 37 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 2296.3ms TimeCoverageRelationStatistics Valid=459, Invalid=5393, Unknown=0, NotChecked=0, Total=5852 [2021-05-03 00:31:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-03 00:31:36,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 89. [2021-05-03 00:31:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 85 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2021-05-03 00:31:36,847 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 86 [2021-05-03 00:31:36,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:36,847 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2021-05-03 00:31:36,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.075) internal successors, (83), 39 states have internal predecessors, (83), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:36,847 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2021-05-03 00:31:36,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-05-03 00:31:36,848 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:36,848 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:36,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-03 00:31:36,848 INFO L428 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:36,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1823510772, now seen corresponding path program 33 times [2021-05-03 00:31:36,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:36,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234096788] [2021-05-03 00:31:36,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:36,949 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1053 5) (<= 5 v_main_~d~0_2870)) InVars {main_~c~0=v_main_~c~0_1053, main_~d~0=v_main_~d~0_2870} OutVars{main_~c~0=v_main_~c~0_1053, main_~d~0=v_main_~d~0_2870} AuxVars[] AssignedVars[] [2021-05-03 00:31:36,950 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:36,964 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:36,967 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:36,976 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:36,994 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2872 5) InVars {main_~d~0=v_main_~d~0_2872} OutVars{main_~d~0=v_main_~d~0_2872} AuxVars[] AssignedVars[] [2021-05-03 00:31:36,995 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:37,001 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:37,005 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:37,011 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:37,021 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:37,022 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:37,029 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:37,037 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1063 6) InVars {main_~c~0=v_main_~c~0_1063} OutVars{main_~c~0=v_main_~c~0_1063} AuxVars[] AssignedVars[] [2021-05-03 00:31:37,038 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:37,048 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:37,053 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:37,061 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:37,077 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1053 5) (<= 5 v_main_~d~0_2870)) InVars {main_~c~0=v_main_~c~0_1053, main_~d~0=v_main_~d~0_2870} OutVars{main_~c~0=v_main_~c~0_1053, main_~d~0=v_main_~d~0_2870} AuxVars[] AssignedVars[] [2021-05-03 00:31:37,078 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:37,100 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:37,103 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:37,111 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:37,129 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2872 5) InVars {main_~d~0=v_main_~d~0_2872} OutVars{main_~d~0=v_main_~d~0_2872} AuxVars[] AssignedVars[] [2021-05-03 00:31:37,130 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:37,136 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:37,140 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:37,146 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:37,164 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:37,165 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:37,175 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:37,185 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1063 6) InVars {main_~c~0=v_main_~c~0_1063} OutVars{main_~c~0=v_main_~c~0_1063} AuxVars[] AssignedVars[] [2021-05-03 00:31:37,186 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:37,187 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:37,192 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:37,211 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:37,227 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1053 5) (<= 5 v_main_~d~0_2870)) InVars {main_~c~0=v_main_~c~0_1053, main_~d~0=v_main_~d~0_2870} OutVars{main_~c~0=v_main_~c~0_1053, main_~d~0=v_main_~d~0_2870} AuxVars[] AssignedVars[] [2021-05-03 00:31:37,228 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:37,242 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:37,245 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:37,253 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:37,271 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_2872 5) InVars {main_~d~0=v_main_~d~0_2872} OutVars{main_~d~0=v_main_~d~0_2872} AuxVars[] AssignedVars[] [2021-05-03 00:31:37,272 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:37,273 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:37,277 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:37,288 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:37,304 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:37,313 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:37,332 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:37,343 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:38,368 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:38,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234096788] [2021-05-03 00:31:38,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1234096788] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:38,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:38,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-05-03 00:31:38,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443525162] [2021-05-03 00:31:38,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-03 00:31:38,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:38,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-03 00:31:38,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-05-03 00:31:38,372 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 40 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:40,796 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2021-05-03 00:31:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-03 00:31:40,797 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 40 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 88 [2021-05-03 00:31:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:40,797 INFO L225 Difference]: With dead ends: 117 [2021-05-03 00:31:40,797 INFO L226 Difference]: Without dead ends: 106 [2021-05-03 00:31:40,798 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 38 SyntacticMatches, 12 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 2352.6ms TimeCoverageRelationStatistics Valid=471, Invalid=5691, Unknown=0, NotChecked=0, Total=6162 [2021-05-03 00:31:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-03 00:31:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 93. [2021-05-03 00:31:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 89 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2021-05-03 00:31:40,833 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 88 [2021-05-03 00:31:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:40,833 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2021-05-03 00:31:40,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.073170731707317) internal successors, (85), 40 states have internal predecessors, (85), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:40,833 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2021-05-03 00:31:40,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-05-03 00:31:40,833 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:40,833 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:40,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-03 00:31:40,833 INFO L428 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:40,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:40,834 INFO L82 PathProgramCache]: Analyzing trace with hash -18982446, now seen corresponding path program 34 times [2021-05-03 00:31:40,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:40,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263182957] [2021-05-03 00:31:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:40,928 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3019) (< v_main_~c~0_1095 5)) InVars {main_~c~0=v_main_~c~0_1095, main_~d~0=v_main_~d~0_3019} OutVars{main_~c~0=v_main_~c~0_1095, main_~d~0=v_main_~d~0_3019} AuxVars[] AssignedVars[] [2021-05-03 00:31:40,929 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:40,942 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:40,944 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:40,952 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:40,969 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3021 5) InVars {main_~d~0=v_main_~d~0_3021} OutVars{main_~d~0=v_main_~d~0_3021} AuxVars[] AssignedVars[] [2021-05-03 00:31:40,970 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:40,970 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:40,974 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:40,985 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:40,996 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:41,012 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3019) (< v_main_~c~0_1095 5)) InVars {main_~c~0=v_main_~c~0_1095, main_~d~0=v_main_~d~0_3019} OutVars{main_~c~0=v_main_~c~0_1095, main_~d~0=v_main_~d~0_3019} AuxVars[] AssignedVars[] [2021-05-03 00:31:41,013 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:41,030 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:41,033 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:41,042 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:41,062 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3021 5) InVars {main_~d~0=v_main_~d~0_3021} OutVars{main_~d~0=v_main_~d~0_3021} AuxVars[] AssignedVars[] [2021-05-03 00:31:41,064 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:41,071 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:41,075 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:41,082 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:41,094 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:41,097 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3019) (< v_main_~c~0_1095 5)) InVars {main_~c~0=v_main_~c~0_1095, main_~d~0=v_main_~d~0_3019} OutVars{main_~c~0=v_main_~c~0_1095, main_~d~0=v_main_~d~0_3019} AuxVars[] AssignedVars[] [2021-05-03 00:31:41,098 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:41,114 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:41,122 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:41,133 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:41,152 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3021 5) InVars {main_~d~0=v_main_~d~0_3021} OutVars{main_~d~0=v_main_~d~0_3021} AuxVars[] AssignedVars[] [2021-05-03 00:31:41,153 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:41,154 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:41,159 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:41,172 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:41,190 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:41,190 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:41,209 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:41,222 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:41,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:42,155 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:42,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263182957] [2021-05-03 00:31:42,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [263182957] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:42,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:42,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-03 00:31:42,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698779952] [2021-05-03 00:31:42,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-03 00:31:42,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:42,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-03 00:31:42,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1559, Unknown=0, NotChecked=0, Total=1722 [2021-05-03 00:31:42,157 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 41 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:44,545 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2021-05-03 00:31:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-03 00:31:44,545 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 41 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2021-05-03 00:31:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:44,546 INFO L225 Difference]: With dead ends: 118 [2021-05-03 00:31:44,546 INFO L226 Difference]: Without dead ends: 107 [2021-05-03 00:31:44,547 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 2288.9ms TimeCoverageRelationStatistics Valid=483, Invalid=5997, Unknown=0, NotChecked=0, Total=6480 [2021-05-03 00:31:44,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-03 00:31:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2021-05-03 00:31:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 91 states have (on average 1.043956043956044) internal successors, (95), 91 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2021-05-03 00:31:44,592 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 90 [2021-05-03 00:31:44,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:44,592 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2021-05-03 00:31:44,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 41 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2021-05-03 00:31:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-03 00:31:44,593 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:44,593 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:44,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-03 00:31:44,593 INFO L428 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:44,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1299109051, now seen corresponding path program 35 times [2021-05-03 00:31:44,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:44,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654118210] [2021-05-03 00:31:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:44,693 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3155) (< v_main_~c~0_1130 5)) InVars {main_~c~0=v_main_~c~0_1130, main_~d~0=v_main_~d~0_3155} OutVars{main_~c~0=v_main_~c~0_1130, main_~d~0=v_main_~d~0_3155} AuxVars[] AssignedVars[] [2021-05-03 00:31:44,695 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:44,709 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:44,711 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:44,719 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:44,737 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3157 5) InVars {main_~d~0=v_main_~d~0_3157} OutVars{main_~d~0=v_main_~d~0_3157} AuxVars[] AssignedVars[] [2021-05-03 00:31:44,738 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:44,738 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:44,742 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:44,753 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:44,764 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:44,764 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:44,770 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:31:44,776 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1141 6) InVars {main_~c~0=v_main_~c~0_1141} OutVars{main_~c~0=v_main_~c~0_1141} AuxVars[] AssignedVars[] [2021-05-03 00:31:44,777 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:44,777 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:44,782 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:44,800 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:44,816 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3155) (< v_main_~c~0_1130 5)) InVars {main_~c~0=v_main_~c~0_1130, main_~d~0=v_main_~d~0_3155} OutVars{main_~c~0=v_main_~c~0_1130, main_~d~0=v_main_~d~0_3155} AuxVars[] AssignedVars[] [2021-05-03 00:31:44,817 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:44,830 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:44,832 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:44,841 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:44,858 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3157 5) InVars {main_~d~0=v_main_~d~0_3157} OutVars{main_~d~0=v_main_~d~0_3157} AuxVars[] AssignedVars[] [2021-05-03 00:31:44,859 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:44,865 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:44,869 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:44,875 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:44,887 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:44,887 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:44,893 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:31:44,899 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1141 6) InVars {main_~c~0=v_main_~c~0_1141} OutVars{main_~c~0=v_main_~c~0_1141} AuxVars[] AssignedVars[] [2021-05-03 00:31:44,905 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:44,921 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:44,926 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:44,934 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:44,949 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3155) (< v_main_~c~0_1130 5)) InVars {main_~c~0=v_main_~c~0_1130, main_~d~0=v_main_~d~0_3155} OutVars{main_~c~0=v_main_~c~0_1130, main_~d~0=v_main_~d~0_3155} AuxVars[] AssignedVars[] [2021-05-03 00:31:44,950 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:44,951 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:44,954 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:44,974 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:44,991 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3157 5) InVars {main_~d~0=v_main_~d~0_3157} OutVars{main_~d~0=v_main_~d~0_3157} AuxVars[] AssignedVars[] [2021-05-03 00:31:44,992 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:44,992 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:44,996 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:45,007 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:45,024 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:45,025 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:45,042 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:45,053 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:45,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:46,168 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:46,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654118210] [2021-05-03 00:31:46,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1654118210] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:46,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:46,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-05-03 00:31:46,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560361457] [2021-05-03 00:31:46,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-03 00:31:46,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:46,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-03 00:31:46,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2021-05-03 00:31:46,169 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:48,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:48,776 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2021-05-03 00:31:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-03 00:31:48,776 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-03 00:31:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:48,777 INFO L225 Difference]: With dead ends: 120 [2021-05-03 00:31:48,777 INFO L226 Difference]: Without dead ends: 109 [2021-05-03 00:31:48,777 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 41 SyntacticMatches, 12 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 2515.7ms TimeCoverageRelationStatistics Valid=495, Invalid=6311, Unknown=0, NotChecked=0, Total=6806 [2021-05-03 00:31:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-03 00:31:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 96. [2021-05-03 00:31:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 92 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2021-05-03 00:31:48,818 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 93 [2021-05-03 00:31:48,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:48,818 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2021-05-03 00:31:48,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 42 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:48,818 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2021-05-03 00:31:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-03 00:31:48,819 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:48,819 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:48,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-03 00:31:48,819 INFO L428 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:48,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1457862695, now seen corresponding path program 36 times [2021-05-03 00:31:48,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:48,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670494446] [2021-05-03 00:31:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:48,920 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3300 6) InVars {main_~d~0=v_main_~d~0_3300} OutVars{main_~d~0=v_main_~d~0_3300} AuxVars[] AssignedVars[] [2021-05-03 00:31:48,921 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:48,921 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:48,925 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:48,936 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:48,951 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~d~0_3302) (< v_main_~c~0_1173 5)) InVars {main_~c~0=v_main_~c~0_1173, main_~d~0=v_main_~d~0_3302} OutVars{main_~c~0=v_main_~c~0_1173, main_~d~0=v_main_~d~0_3302} AuxVars[] AssignedVars[] [2021-05-03 00:31:48,952 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:31:48,963 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:48,965 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:48,973 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:31:48,989 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:48,990 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:48,997 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:49,002 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:49,005 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3300 6) InVars {main_~d~0=v_main_~d~0_3300} OutVars{main_~d~0=v_main_~d~0_3300} AuxVars[] AssignedVars[] [2021-05-03 00:31:49,005 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:49,011 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:49,015 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:49,021 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:49,031 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~d~0_3302) (< v_main_~c~0_1173 5)) InVars {main_~c~0=v_main_~c~0_1173, main_~d~0=v_main_~d~0_3302} OutVars{main_~c~0=v_main_~c~0_1173, main_~d~0=v_main_~d~0_3302} AuxVars[] AssignedVars[] [2021-05-03 00:31:49,032 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:31:49,036 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:49,038 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:49,055 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:31:49,071 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:49,071 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:49,078 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:49,084 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:31:49,086 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3300 6) InVars {main_~d~0=v_main_~d~0_3300} OutVars{main_~d~0=v_main_~d~0_3300} AuxVars[] AssignedVars[] [2021-05-03 00:31:49,087 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:49,093 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:49,097 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:49,109 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:49,119 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~d~0_3302) (< v_main_~c~0_1173 5)) InVars {main_~c~0=v_main_~c~0_1173, main_~d~0=v_main_~d~0_3302} OutVars{main_~c~0=v_main_~c~0_1173, main_~d~0=v_main_~d~0_3302} AuxVars[] AssignedVars[] [2021-05-03 00:31:49,120 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:31:49,131 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:49,135 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:49,143 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:31:49,173 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:49,174 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:49,193 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:49,204 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:49,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:50,329 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:50,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670494446] [2021-05-03 00:31:50,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [670494446] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:50,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:50,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2021-05-03 00:31:50,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692559961] [2021-05-03 00:31:50,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-03 00:31:50,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:50,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-03 00:31:50,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2021-05-03 00:31:50,330 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:52,967 INFO L93 Difference]: Finished difference Result 122 states and 134 transitions. [2021-05-03 00:31:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-03 00:31:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-03 00:31:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:52,968 INFO L225 Difference]: With dead ends: 122 [2021-05-03 00:31:52,968 INFO L226 Difference]: Without dead ends: 111 [2021-05-03 00:31:52,969 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 43 SyntacticMatches, 11 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 2593.4ms TimeCoverageRelationStatistics Valid=507, Invalid=6633, Unknown=0, NotChecked=0, Total=7140 [2021-05-03 00:31:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-03 00:31:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2021-05-03 00:31:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 94 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:53,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2021-05-03 00:31:53,017 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 95 [2021-05-03 00:31:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:53,017 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2021-05-03 00:31:53,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 43 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2021-05-03 00:31:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-03 00:31:53,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:53,018 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:53,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-03 00:31:53,018 INFO L428 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:53,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:53,019 INFO L82 PathProgramCache]: Analyzing trace with hash -912888969, now seen corresponding path program 37 times [2021-05-03 00:31:53,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:53,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208798014] [2021-05-03 00:31:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:53,115 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3455) (< v_main_~c~0_1220 5)) InVars {main_~c~0=v_main_~c~0_1220, main_~d~0=v_main_~d~0_3455} OutVars{main_~c~0=v_main_~c~0_1220, main_~d~0=v_main_~d~0_3455} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,116 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:53,129 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,131 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:53,140 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:53,158 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3457 5) InVars {main_~d~0=v_main_~d~0_3457} OutVars{main_~d~0=v_main_~d~0_3457} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,158 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:53,159 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,163 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:53,174 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:53,185 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,185 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,193 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:53,199 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1231 6) InVars {main_~c~0=v_main_~c~0_1231} OutVars{main_~c~0=v_main_~c~0_1231} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,200 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:53,211 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,215 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:53,223 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:53,238 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3455) (< v_main_~c~0_1220 5)) InVars {main_~c~0=v_main_~c~0_1220, main_~d~0=v_main_~d~0_3455} OutVars{main_~c~0=v_main_~c~0_1220, main_~d~0=v_main_~d~0_3455} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,239 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:53,240 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,242 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:53,262 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:53,279 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3457 5) InVars {main_~d~0=v_main_~d~0_3457} OutVars{main_~d~0=v_main_~d~0_3457} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,279 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:53,280 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,284 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:53,295 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:53,306 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,306 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,313 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:53,320 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1231 6) InVars {main_~c~0=v_main_~c~0_1231} OutVars{main_~c~0=v_main_~c~0_1231} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,321 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:53,321 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,326 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:53,343 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:53,358 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3455) (< v_main_~c~0_1220 5)) InVars {main_~c~0=v_main_~c~0_1220, main_~d~0=v_main_~d~0_3455} OutVars{main_~c~0=v_main_~c~0_1220, main_~d~0=v_main_~d~0_3455} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,358 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:53,359 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,361 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:53,381 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:53,398 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3457 5) InVars {main_~d~0=v_main_~d~0_3457} OutVars{main_~d~0=v_main_~d~0_3457} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,398 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:53,399 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,403 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:53,414 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:53,432 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:53,433 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:53,451 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:53,462 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:53,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:54,683 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:54,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208798014] [2021-05-03 00:31:54,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [208798014] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:54,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:54,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-05-03 00:31:54,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126171510] [2021-05-03 00:31:54,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-03 00:31:54,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:54,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-03 00:31:54,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1805, Unknown=0, NotChecked=0, Total=1980 [2021-05-03 00:31:54,684 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 44 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:57,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:31:57,534 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-05-03 00:31:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-03 00:31:57,535 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 44 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2021-05-03 00:31:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:31:57,535 INFO L225 Difference]: With dead ends: 124 [2021-05-03 00:31:57,535 INFO L226 Difference]: Without dead ends: 113 [2021-05-03 00:31:57,536 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 42 SyntacticMatches, 13 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1352 ImplicationChecksByTransitivity, 2794.9ms TimeCoverageRelationStatistics Valid=519, Invalid=6963, Unknown=0, NotChecked=0, Total=7482 [2021-05-03 00:31:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-03 00:31:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 100. [2021-05-03 00:31:57,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2021-05-03 00:31:57,574 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 97 [2021-05-03 00:31:57,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:31:57,574 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2021-05-03 00:31:57,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 44 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:31:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2021-05-03 00:31:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-03 00:31:57,575 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:31:57,575 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:31:57,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-03 00:31:57,575 INFO L428 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:31:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:31:57,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1179148395, now seen corresponding path program 38 times [2021-05-03 00:31:57,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:31:57,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751613186] [2021-05-03 00:31:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:31:57,674 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3613) (< v_main_~c~0_1265 5)) InVars {main_~c~0=v_main_~c~0_1265, main_~d~0=v_main_~d~0_3613} OutVars{main_~c~0=v_main_~c~0_1265, main_~d~0=v_main_~d~0_3613} AuxVars[] AssignedVars[] [2021-05-03 00:31:57,675 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:57,676 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:57,678 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:57,698 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:57,715 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3615 5) InVars {main_~d~0=v_main_~d~0_3615} OutVars{main_~d~0=v_main_~d~0_3615} AuxVars[] AssignedVars[] [2021-05-03 00:31:57,716 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:57,717 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:57,721 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:57,732 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:57,744 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1274 6) InVars {main_~c~0=v_main_~c~0_1274} OutVars{main_~c~0=v_main_~c~0_1274} AuxVars[] AssignedVars[] [2021-05-03 00:31:57,745 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:57,746 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:57,750 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:57,769 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:57,782 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:57,783 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:57,800 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:57,808 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3613) (< v_main_~c~0_1265 5)) InVars {main_~c~0=v_main_~c~0_1265, main_~d~0=v_main_~d~0_3613} OutVars{main_~c~0=v_main_~c~0_1265, main_~d~0=v_main_~d~0_3613} AuxVars[] AssignedVars[] [2021-05-03 00:31:57,809 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:57,823 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:57,825 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:57,834 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:57,853 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3615 5) InVars {main_~d~0=v_main_~d~0_3615} OutVars{main_~d~0=v_main_~d~0_3615} AuxVars[] AssignedVars[] [2021-05-03 00:31:57,854 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:57,854 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:57,858 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:57,869 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:57,882 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1274 6) InVars {main_~c~0=v_main_~c~0_1274} OutVars{main_~c~0=v_main_~c~0_1274} AuxVars[] AssignedVars[] [2021-05-03 00:31:57,883 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:31:57,898 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:57,905 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:57,914 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:31:57,927 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:57,928 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:57,935 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:31:57,943 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3613) (< v_main_~c~0_1265 5)) InVars {main_~c~0=v_main_~c~0_1265, main_~d~0=v_main_~d~0_3613} OutVars{main_~c~0=v_main_~c~0_1265, main_~d~0=v_main_~d~0_3613} AuxVars[] AssignedVars[] [2021-05-03 00:31:57,944 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:31:57,957 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:57,959 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:31:57,968 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:31:57,985 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3615 5) InVars {main_~d~0=v_main_~d~0_3615} OutVars{main_~d~0=v_main_~d~0_3615} AuxVars[] AssignedVars[] [2021-05-03 00:31:57,986 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:31:57,987 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:57,991 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:31:58,002 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:31:58,026 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:31:58,026 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:31:58,049 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:31:58,062 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:31:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:58,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:31:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:31:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:31:59,362 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:31:59,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751613186] [2021-05-03 00:31:59,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1751613186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:31:59,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:31:59,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-03 00:31:59,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49005486] [2021-05-03 00:31:59,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-03 00:31:59,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:31:59,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-03 00:31:59,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1891, Unknown=0, NotChecked=0, Total=2070 [2021-05-03 00:31:59,363 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 45 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:32:02,208 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2021-05-03 00:32:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-03 00:32:02,208 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 45 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2021-05-03 00:32:02,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:32:02,209 INFO L225 Difference]: With dead ends: 126 [2021-05-03 00:32:02,209 INFO L226 Difference]: Without dead ends: 115 [2021-05-03 00:32:02,210 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 43 SyntacticMatches, 13 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 2865.9ms TimeCoverageRelationStatistics Valid=531, Invalid=7301, Unknown=0, NotChecked=0, Total=7832 [2021-05-03 00:32:02,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-03 00:32:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2021-05-03 00:32:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 1.0408163265306123) internal successors, (102), 98 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:02,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2021-05-03 00:32:02,274 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 99 [2021-05-03 00:32:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:32:02,274 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2021-05-03 00:32:02,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 45 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2021-05-03 00:32:02,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-03 00:32:02,275 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:32:02,275 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:32:02,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-03 00:32:02,275 INFO L428 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:32:02,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:32:02,276 INFO L82 PathProgramCache]: Analyzing trace with hash 643580979, now seen corresponding path program 39 times [2021-05-03 00:32:02,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:32:02,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453873856] [2021-05-03 00:32:02,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:32:02,381 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3775) (< v_main_~c~0_1310 5)) InVars {main_~c~0=v_main_~c~0_1310, main_~d~0=v_main_~d~0_3775} OutVars{main_~c~0=v_main_~c~0_1310, main_~d~0=v_main_~d~0_3775} AuxVars[] AssignedVars[] [2021-05-03 00:32:02,382 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:02,395 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:02,397 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:02,405 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:02,422 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3777 5) InVars {main_~d~0=v_main_~d~0_3777} OutVars{main_~d~0=v_main_~d~0_3777} AuxVars[] AssignedVars[] [2021-05-03 00:32:02,423 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:02,424 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:02,428 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:02,439 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:02,449 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:02,450 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:02,457 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:02,462 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:02,466 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3775) (< v_main_~c~0_1310 5)) InVars {main_~c~0=v_main_~c~0_1310, main_~d~0=v_main_~d~0_3775} OutVars{main_~c~0=v_main_~c~0_1310, main_~d~0=v_main_~d~0_3775} AuxVars[] AssignedVars[] [2021-05-03 00:32:02,467 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:02,480 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:02,482 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:02,491 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:02,508 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3777 5) InVars {main_~d~0=v_main_~d~0_3777} OutVars{main_~d~0=v_main_~d~0_3777} AuxVars[] AssignedVars[] [2021-05-03 00:32:02,509 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:02,515 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:02,519 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:02,525 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:02,536 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:02,536 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:02,544 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:02,550 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:02,552 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3775) (< v_main_~c~0_1310 5)) InVars {main_~c~0=v_main_~c~0_1310, main_~d~0=v_main_~d~0_3775} OutVars{main_~c~0=v_main_~c~0_1310, main_~d~0=v_main_~d~0_3775} AuxVars[] AssignedVars[] [2021-05-03 00:32:02,553 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:02,567 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:02,569 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:02,578 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:02,595 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3777 5) InVars {main_~d~0=v_main_~d~0_3777} OutVars{main_~d~0=v_main_~d~0_3777} AuxVars[] AssignedVars[] [2021-05-03 00:32:02,596 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:02,602 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:02,606 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:02,612 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:02,633 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:02,634 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:02,651 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:32:02,661 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:32:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:32:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:32:03,969 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:32:03,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453873856] [2021-05-03 00:32:03,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [453873856] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:32:03,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:32:03,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2021-05-03 00:32:03,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276538088] [2021-05-03 00:32:03,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-03 00:32:03,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:32:03,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-03 00:32:03,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1979, Unknown=0, NotChecked=0, Total=2162 [2021-05-03 00:32:03,971 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:32:07,045 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2021-05-03 00:32:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-03 00:32:07,045 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-03 00:32:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:32:07,046 INFO L225 Difference]: With dead ends: 128 [2021-05-03 00:32:07,046 INFO L226 Difference]: Without dead ends: 117 [2021-05-03 00:32:07,047 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 42 SyntacticMatches, 15 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 2966.2ms TimeCoverageRelationStatistics Valid=543, Invalid=7647, Unknown=0, NotChecked=0, Total=8190 [2021-05-03 00:32:07,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-03 00:32:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 104. [2021-05-03 00:32:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.04) internal successors, (104), 100 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2021-05-03 00:32:07,089 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 101 [2021-05-03 00:32:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:32:07,090 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2021-05-03 00:32:07,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 46 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2021-05-03 00:32:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-03 00:32:07,090 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:32:07,090 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:32:07,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-03 00:32:07,090 INFO L428 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:32:07,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:32:07,091 INFO L82 PathProgramCache]: Analyzing trace with hash -60147375, now seen corresponding path program 40 times [2021-05-03 00:32:07,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:32:07,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813117598] [2021-05-03 00:32:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:32:07,192 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3937) (< v_main_~c~0_1355 5)) InVars {main_~c~0=v_main_~c~0_1355, main_~d~0=v_main_~d~0_3937} OutVars{main_~c~0=v_main_~c~0_1355, main_~d~0=v_main_~d~0_3937} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,193 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:07,193 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,195 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:07,215 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:07,232 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3939 5) InVars {main_~d~0=v_main_~d~0_3939} OutVars{main_~d~0=v_main_~d~0_3939} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,233 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:07,233 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,237 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:07,250 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:07,261 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,263 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,270 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:07,281 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1366 6) InVars {main_~c~0=v_main_~c~0_1366} OutVars{main_~c~0=v_main_~c~0_1366} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,282 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:32:07,292 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,297 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:07,305 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:32:07,321 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3937) (< v_main_~c~0_1355 5)) InVars {main_~c~0=v_main_~c~0_1355, main_~d~0=v_main_~d~0_3937} OutVars{main_~c~0=v_main_~c~0_1355, main_~d~0=v_main_~d~0_3937} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,322 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:07,335 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,337 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:07,346 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:07,364 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3939 5) InVars {main_~d~0=v_main_~d~0_3939} OutVars{main_~d~0=v_main_~d~0_3939} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,364 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:07,371 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,375 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:07,380 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:07,391 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,391 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,398 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:07,405 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1366 6) InVars {main_~c~0=v_main_~c~0_1366} OutVars{main_~c~0=v_main_~c~0_1366} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,406 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:32:07,407 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,413 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:07,430 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:32:07,446 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_3937) (< v_main_~c~0_1355 5)) InVars {main_~c~0=v_main_~c~0_1355, main_~d~0=v_main_~d~0_3937} OutVars{main_~c~0=v_main_~c~0_1355, main_~d~0=v_main_~d~0_3937} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,448 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:07,448 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,451 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:07,480 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:07,497 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_3939 5) InVars {main_~d~0=v_main_~d~0_3939} OutVars{main_~d~0=v_main_~d~0_3939} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,498 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:07,498 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,502 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:07,514 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:07,531 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:07,531 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:07,549 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:32:07,560 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:32:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:32:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:32:08,928 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:32:08,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813117598] [2021-05-03 00:32:08,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1813117598] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:32:08,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:32:08,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-03 00:32:08,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255064000] [2021-05-03 00:32:08,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-03 00:32:08,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:32:08,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-03 00:32:08,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2069, Unknown=0, NotChecked=0, Total=2256 [2021-05-03 00:32:08,930 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:12,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:32:12,049 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2021-05-03 00:32:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-03 00:32:12,049 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2021-05-03 00:32:12,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:32:12,050 INFO L225 Difference]: With dead ends: 132 [2021-05-03 00:32:12,050 INFO L226 Difference]: Without dead ends: 121 [2021-05-03 00:32:12,050 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 43 SyntacticMatches, 15 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 3088.6ms TimeCoverageRelationStatistics Valid=555, Invalid=8001, Unknown=0, NotChecked=0, Total=8556 [2021-05-03 00:32:12,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-05-03 00:32:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 108. [2021-05-03 00:32:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 1.0384615384615385) internal successors, (108), 104 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:12,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2021-05-03 00:32:12,109 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 103 [2021-05-03 00:32:12,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:32:12,109 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2021-05-03 00:32:12,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 47 states have internal predecessors, (100), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:12,109 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2021-05-03 00:32:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-03 00:32:12,109 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:32:12,110 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:32:12,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-03 00:32:12,110 INFO L428 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:32:12,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:32:12,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2033230097, now seen corresponding path program 41 times [2021-05-03 00:32:12,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:32:12,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653682275] [2021-05-03 00:32:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:32:12,802 WARN L205 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 153 [2021-05-03 00:32:12,858 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1400 5) (<= 5 v_main_~d~0_4107)) InVars {main_~c~0=v_main_~c~0_1400, main_~d~0=v_main_~d~0_4107} OutVars{main_~c~0=v_main_~c~0_1400, main_~d~0=v_main_~d~0_4107} AuxVars[] AssignedVars[] [2021-05-03 00:32:12,859 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:12,873 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:12,878 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:12,886 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:12,905 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_4109 5) InVars {main_~d~0=v_main_~d~0_4109} OutVars{main_~d~0=v_main_~d~0_4109} AuxVars[] AssignedVars[] [2021-05-03 00:32:12,906 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:12,907 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:12,911 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:12,922 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:12,934 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1409 6) InVars {main_~c~0=v_main_~c~0_1409} OutVars{main_~c~0=v_main_~c~0_1409} AuxVars[] AssignedVars[] [2021-05-03 00:32:12,935 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:32:12,936 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:12,940 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:12,959 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:32:12,975 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1400 5) (<= 5 v_main_~d~0_4107)) InVars {main_~c~0=v_main_~c~0_1400, main_~d~0=v_main_~d~0_4107} OutVars{main_~c~0=v_main_~c~0_1400, main_~d~0=v_main_~d~0_4107} AuxVars[] AssignedVars[] [2021-05-03 00:32:12,976 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:12,989 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:12,991 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:13,000 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:13,017 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_4109 5) InVars {main_~d~0=v_main_~d~0_4109} OutVars{main_~d~0=v_main_~d~0_4109} AuxVars[] AssignedVars[] [2021-05-03 00:32:13,018 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:13,025 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:13,036 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:13,042 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:13,054 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1409 6) InVars {main_~c~0=v_main_~c~0_1409} OutVars{main_~c~0=v_main_~c~0_1409} AuxVars[] AssignedVars[] [2021-05-03 00:32:13,055 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:32:13,066 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:13,070 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:13,079 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:32:13,094 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1400 5) (<= 5 v_main_~d~0_4107)) InVars {main_~c~0=v_main_~c~0_1400, main_~d~0=v_main_~d~0_4107} OutVars{main_~c~0=v_main_~c~0_1400, main_~d~0=v_main_~d~0_4107} AuxVars[] AssignedVars[] [2021-05-03 00:32:13,102 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:13,103 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:13,105 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:13,125 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:13,154 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_4109 5) InVars {main_~d~0=v_main_~d~0_4109} OutVars{main_~d~0=v_main_~d~0_4109} AuxVars[] AssignedVars[] [2021-05-03 00:32:13,155 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:13,161 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:13,165 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:13,171 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:13,186 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:13,187 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:13,204 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:32:13,214 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:32:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:13,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:32:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:32:14,816 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:32:14,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653682275] [2021-05-03 00:32:14,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1653682275] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:32:14,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:32:14,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2021-05-03 00:32:14,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679339132] [2021-05-03 00:32:14,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-03 00:32:14,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:32:14,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-03 00:32:14,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2256, Unknown=0, NotChecked=0, Total=2450 [2021-05-03 00:32:14,818 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand has 50 states, 50 states have (on average 2.04) internal successors, (102), 49 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:32:18,280 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2021-05-03 00:32:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-03 00:32:18,281 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.04) internal successors, (102), 49 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-03 00:32:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:32:18,281 INFO L225 Difference]: With dead ends: 130 [2021-05-03 00:32:18,282 INFO L226 Difference]: Without dead ends: 119 [2021-05-03 00:32:18,282 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 40 SyntacticMatches, 18 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1753 ImplicationChecksByTransitivity, 3441.6ms TimeCoverageRelationStatistics Valid=576, Invalid=8736, Unknown=0, NotChecked=0, Total=9312 [2021-05-03 00:32:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-03 00:32:18,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2021-05-03 00:32:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.037037037037037) internal successors, (112), 108 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2021-05-03 00:32:18,332 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 105 [2021-05-03 00:32:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:32:18,332 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2021-05-03 00:32:18,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.04) internal successors, (102), 49 states have internal predecessors, (102), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2021-05-03 00:32:18,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-05-03 00:32:18,333 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:32:18,333 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:32:18,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-03 00:32:18,333 INFO L428 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:32:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:32:18,334 INFO L82 PathProgramCache]: Analyzing trace with hash 326718754, now seen corresponding path program 42 times [2021-05-03 00:32:18,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:32:18,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242072825] [2021-05-03 00:32:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:32:18,999 WARN L205 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:32:19,071 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_4268) (< v_main_~c~0_1438 5)) InVars {main_~c~0=v_main_~c~0_1438, main_~d~0=v_main_~d~0_4268} OutVars{main_~c~0=v_main_~c~0_1438, main_~d~0=v_main_~d~0_4268} AuxVars[] AssignedVars[] [2021-05-03 00:32:19,080 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:19,094 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:19,101 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:19,110 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:19,127 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_4270 5) InVars {main_~d~0=v_main_~d~0_4270} OutVars{main_~d~0=v_main_~d~0_4270} AuxVars[] AssignedVars[] [2021-05-03 00:32:19,128 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:19,129 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:19,133 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:19,144 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:19,155 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_279 5) (<= 6 v_main_~c~0_1448)) InVars {main_~b~0=v_main_~b~0_279, main_~c~0=v_main_~c~0_1448} OutVars{main_~b~0=v_main_~b~0_279, main_~c~0=v_main_~c~0_1448} AuxVars[] AssignedVars[] [2021-05-03 00:32:19,156 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:19,167 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:19,169 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:19,177 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:19,193 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:19,196 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_4268) (< v_main_~c~0_1438 5)) InVars {main_~c~0=v_main_~c~0_1438, main_~d~0=v_main_~d~0_4268} OutVars{main_~c~0=v_main_~c~0_1438, main_~d~0=v_main_~d~0_4268} AuxVars[] AssignedVars[] [2021-05-03 00:32:19,197 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:19,198 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:19,200 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:19,220 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:19,238 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_4270 5) InVars {main_~d~0=v_main_~d~0_4270} OutVars{main_~d~0=v_main_~d~0_4270} AuxVars[] AssignedVars[] [2021-05-03 00:32:19,239 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:19,240 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:19,244 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:19,255 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:19,267 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_279 5) (<= 6 v_main_~c~0_1448)) InVars {main_~b~0=v_main_~b~0_279, main_~c~0=v_main_~c~0_1448} OutVars{main_~b~0=v_main_~b~0_279, main_~c~0=v_main_~c~0_1448} AuxVars[] AssignedVars[] [2021-05-03 00:32:19,268 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:19,269 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:19,271 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:19,288 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:19,304 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:19,307 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 5 v_main_~d~0_4268) (< v_main_~c~0_1438 5)) InVars {main_~c~0=v_main_~c~0_1438, main_~d~0=v_main_~d~0_4268} OutVars{main_~c~0=v_main_~c~0_1438, main_~d~0=v_main_~d~0_4268} AuxVars[] AssignedVars[] [2021-05-03 00:32:19,308 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:19,309 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:19,311 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:19,331 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:19,349 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_4270 5) InVars {main_~d~0=v_main_~d~0_4270} OutVars{main_~d~0=v_main_~d~0_4270} AuxVars[] AssignedVars[] [2021-05-03 00:32:19,349 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:19,356 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:19,360 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:19,365 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:19,383 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:19,384 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:19,404 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:32:19,415 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:32:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:32:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:32:21,006 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:32:21,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242072825] [2021-05-03 00:32:21,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [242072825] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:32:21,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:32:21,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-05-03 00:32:21,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144939083] [2021-05-03 00:32:21,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-03 00:32:21,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:32:21,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-03 00:32:21,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2353, Unknown=0, NotChecked=0, Total=2550 [2021-05-03 00:32:21,007 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:32:24,411 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2021-05-03 00:32:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-03 00:32:24,411 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2021-05-03 00:32:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:32:24,412 INFO L225 Difference]: With dead ends: 131 [2021-05-03 00:32:24,412 INFO L226 Difference]: Without dead ends: 120 [2021-05-03 00:32:24,412 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 40 SyntacticMatches, 20 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1880 ImplicationChecksByTransitivity, 3481.0ms TimeCoverageRelationStatistics Valid=585, Invalid=9117, Unknown=0, NotChecked=0, Total=9702 [2021-05-03 00:32:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-03 00:32:24,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2021-05-03 00:32:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 109 states have (on average 1.036697247706422) internal successors, (113), 109 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2021-05-03 00:32:24,461 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 108 [2021-05-03 00:32:24,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:32:24,461 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2021-05-03 00:32:24,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 50 states have internal predecessors, (105), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2021-05-03 00:32:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-03 00:32:24,462 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:32:24,462 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:32:24,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-03 00:32:24,462 INFO L428 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:32:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:32:24,462 INFO L82 PathProgramCache]: Analyzing trace with hash 751982443, now seen corresponding path program 43 times [2021-05-03 00:32:24,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:32:24,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515147136] [2021-05-03 00:32:24,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:32:25,139 WARN L205 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:32:25,215 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1488 5) (<= 5 v_main_~d~0_4427)) InVars {main_~c~0=v_main_~c~0_1488, main_~d~0=v_main_~d~0_4427} OutVars{main_~c~0=v_main_~c~0_1488, main_~d~0=v_main_~d~0_4427} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,216 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:25,231 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,233 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:25,242 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:25,260 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_4429 5) InVars {main_~d~0=v_main_~d~0_4429} OutVars{main_~d~0=v_main_~d~0_4429} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,261 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:25,268 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,272 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:25,278 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:25,290 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_1499) (< v_main_~b~0_297 5)) InVars {main_~b~0=v_main_~b~0_297, main_~c~0=v_main_~c~0_1499} OutVars{main_~b~0=v_main_~b~0_297, main_~c~0=v_main_~c~0_1499} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,306 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:25,319 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,321 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:25,329 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:25,345 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,346 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,351 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:32:25,356 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:25,359 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1488 5) (<= 5 v_main_~d~0_4427)) InVars {main_~c~0=v_main_~c~0_1488, main_~d~0=v_main_~d~0_4427} OutVars{main_~c~0=v_main_~c~0_1488, main_~d~0=v_main_~d~0_4427} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,360 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:25,361 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,363 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:25,396 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:25,417 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_4429 5) InVars {main_~d~0=v_main_~d~0_4429} OutVars{main_~d~0=v_main_~d~0_4429} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,418 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:25,419 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,422 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:25,434 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:25,448 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_1499) (< v_main_~b~0_297 5)) InVars {main_~b~0=v_main_~b~0_297, main_~c~0=v_main_~c~0_1499} OutVars{main_~b~0=v_main_~b~0_297, main_~c~0=v_main_~c~0_1499} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,453 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:25,464 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,466 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:25,474 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:25,490 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,490 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,496 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:32:25,500 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:25,503 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~c~0_1488 5) (<= 5 v_main_~d~0_4427)) InVars {main_~c~0=v_main_~c~0_1488, main_~d~0=v_main_~d~0_4427} OutVars{main_~c~0=v_main_~c~0_1488, main_~d~0=v_main_~d~0_4427} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,504 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size [2021-05-03 00:32:25,505 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,507 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:25,527 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.0 percent of original size 53 [2021-05-03 00:32:25,545 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~d~0_4429 5) InVars {main_~d~0=v_main_~d~0_4429} OutVars{main_~d~0=v_main_~d~0_4429} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,545 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size [2021-05-03 00:32:25,552 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,555 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:25,561 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.2 percent of original size 47 [2021-05-03 00:32:25,580 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:25,580 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:25,597 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:32:25,608 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:32:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:32:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:32:27,283 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:32:27,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515147136] [2021-05-03 00:32:27,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1515147136] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:32:27,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:32:27,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-05-03 00:32:27,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143357955] [2021-05-03 00:32:27,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-03 00:32:27,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:32:27,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-03 00:32:27,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2452, Unknown=0, NotChecked=0, Total=2652 [2021-05-03 00:32:27,284 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:32:30,752 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2021-05-03 00:32:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-03 00:32:30,753 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2021-05-03 00:32:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:32:30,753 INFO L225 Difference]: With dead ends: 133 [2021-05-03 00:32:30,753 INFO L226 Difference]: Without dead ends: 122 [2021-05-03 00:32:30,754 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 44 SyntacticMatches, 18 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 3578.9ms TimeCoverageRelationStatistics Valid=594, Invalid=9506, Unknown=0, NotChecked=0, Total=10100 [2021-05-03 00:32:30,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-03 00:32:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2021-05-03 00:32:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 110 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2021-05-03 00:32:30,804 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 111 [2021-05-03 00:32:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:32:30,805 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2021-05-03 00:32:30,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 51 states have internal predecessors, (108), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2021-05-03 00:32:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-03 00:32:30,805 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:32:30,805 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:32:30,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-03 00:32:30,805 INFO L428 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:32:30,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:32:30,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1034444425, now seen corresponding path program 44 times [2021-05-03 00:32:30,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:32:30,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614585440] [2021-05-03 00:32:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:32:31,499 WARN L205 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:32:31,595 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_317 5) (<= 6 v_main_~c~0_1562)) InVars {main_~b~0=v_main_~b~0_317, main_~c~0=v_main_~c~0_1562} OutVars{main_~b~0=v_main_~b~0_317, main_~c~0=v_main_~c~0_1562} AuxVars[] AssignedVars[] [2021-05-03 00:32:31,596 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:31,597 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:31,599 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:31,616 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:31,631 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:31,632 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:31,639 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:31,645 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:31,653 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_317 5) (<= 6 v_main_~c~0_1562)) InVars {main_~b~0=v_main_~b~0_317, main_~c~0=v_main_~c~0_1562} OutVars{main_~b~0=v_main_~b~0_317, main_~c~0=v_main_~c~0_1562} AuxVars[] AssignedVars[] [2021-05-03 00:32:31,653 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:31,664 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:31,666 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:31,675 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:31,690 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:31,690 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:31,698 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:31,703 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:31,711 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:31,712 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:31,729 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:32:31,740 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:32:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:32:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:32:33,297 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:32:33,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614585440] [2021-05-03 00:32:33,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1614585440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:32:33,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:32:33,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-05-03 00:32:33,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287126702] [2021-05-03 00:32:33,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-03 00:32:33,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:32:33,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-03 00:32:33,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2553, Unknown=0, NotChecked=0, Total=2756 [2021-05-03 00:32:33,298 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:37,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:32:37,001 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2021-05-03 00:32:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-03 00:32:37,002 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2021-05-03 00:32:37,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:32:37,002 INFO L225 Difference]: With dead ends: 135 [2021-05-03 00:32:37,002 INFO L226 Difference]: Without dead ends: 124 [2021-05-03 00:32:37,003 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 49 SyntacticMatches, 14 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2116 ImplicationChecksByTransitivity, 3604.7ms TimeCoverageRelationStatistics Valid=603, Invalid=9903, Unknown=0, NotChecked=0, Total=10506 [2021-05-03 00:32:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-05-03 00:32:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2021-05-03 00:32:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2021-05-03 00:32:37,079 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 113 [2021-05-03 00:32:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:32:37,079 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2021-05-03 00:32:37,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 52 states have internal predecessors, (110), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2021-05-03 00:32:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-03 00:32:37,080 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:32:37,080 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:32:37,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-03 00:32:37,080 INFO L428 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:32:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:32:37,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1897469479, now seen corresponding path program 45 times [2021-05-03 00:32:37,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:32:37,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660192040] [2021-05-03 00:32:37,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:32:37,793 WARN L205 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:32:37,881 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_1619) (< v_main_~b~0_337 5)) InVars {main_~b~0=v_main_~b~0_337, main_~c~0=v_main_~c~0_1619} OutVars{main_~b~0=v_main_~b~0_337, main_~c~0=v_main_~c~0_1619} AuxVars[] AssignedVars[] [2021-05-03 00:32:37,882 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:37,883 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:37,885 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:37,906 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:37,922 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:37,922 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:37,930 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:37,936 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:37,939 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_1619) (< v_main_~b~0_337 5)) InVars {main_~b~0=v_main_~b~0_337, main_~c~0=v_main_~c~0_1619} OutVars{main_~b~0=v_main_~b~0_337, main_~c~0=v_main_~c~0_1619} AuxVars[] AssignedVars[] [2021-05-03 00:32:37,940 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:37,940 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:37,943 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:37,977 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:37,996 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:37,997 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:38,006 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:38,013 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:38,024 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:38,025 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:38,045 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:32:38,057 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:32:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:38,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:32:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:32:39,817 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:32:39,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660192040] [2021-05-03 00:32:39,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [660192040] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:32:39,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:32:39,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-03 00:32:39,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081511890] [2021-05-03 00:32:39,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-03 00:32:39,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:32:39,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-03 00:32:39,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2656, Unknown=0, NotChecked=0, Total=2862 [2021-05-03 00:32:39,818 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:32:43,474 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2021-05-03 00:32:43,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-03 00:32:43,475 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2021-05-03 00:32:43,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:32:43,475 INFO L225 Difference]: With dead ends: 137 [2021-05-03 00:32:43,475 INFO L226 Difference]: Without dead ends: 126 [2021-05-03 00:32:43,476 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 47 SyntacticMatches, 17 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2281 ImplicationChecksByTransitivity, 3759.2ms TimeCoverageRelationStatistics Valid=612, Invalid=10308, Unknown=0, NotChecked=0, Total=10920 [2021-05-03 00:32:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-05-03 00:32:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2021-05-03 00:32:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2021-05-03 00:32:43,552 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 115 [2021-05-03 00:32:43,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:32:43,552 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2021-05-03 00:32:43,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 53 states have internal predecessors, (112), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:43,553 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2021-05-03 00:32:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-03 00:32:43,553 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:32:43,553 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:32:43,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-03 00:32:43,553 INFO L428 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:32:43,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:32:43,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1959109051, now seen corresponding path program 46 times [2021-05-03 00:32:43,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:32:43,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855390865] [2021-05-03 00:32:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:32:44,263 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 158 [2021-05-03 00:32:44,375 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_1676) (< v_main_~b~0_357 5)) InVars {main_~b~0=v_main_~b~0_357, main_~c~0=v_main_~c~0_1676} OutVars{main_~b~0=v_main_~b~0_357, main_~c~0=v_main_~c~0_1676} AuxVars[] AssignedVars[] [2021-05-03 00:32:44,376 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:44,377 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:44,379 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:44,397 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:44,413 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:44,413 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:44,414 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:44,421 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:44,429 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_1676) (< v_main_~b~0_357 5)) InVars {main_~b~0=v_main_~b~0_357, main_~c~0=v_main_~c~0_1676} OutVars{main_~b~0=v_main_~b~0_357, main_~c~0=v_main_~c~0_1676} AuxVars[] AssignedVars[] [2021-05-03 00:32:44,430 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:44,431 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:44,433 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:44,450 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:44,474 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:44,475 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:44,475 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:44,486 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:44,504 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:44,505 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:44,526 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:32:44,539 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:32:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:44,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:32:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:32:46,300 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:32:46,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855390865] [2021-05-03 00:32:46,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [855390865] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:32:46,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:32:46,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2021-05-03 00:32:46,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408613775] [2021-05-03 00:32:46,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-03 00:32:46,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:32:46,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-03 00:32:46,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2761, Unknown=0, NotChecked=0, Total=2970 [2021-05-03 00:32:46,302 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 54 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:50,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:32:50,265 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2021-05-03 00:32:50,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-03 00:32:50,266 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 54 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-03 00:32:50,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:32:50,266 INFO L225 Difference]: With dead ends: 139 [2021-05-03 00:32:50,267 INFO L226 Difference]: Without dead ends: 128 [2021-05-03 00:32:50,267 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 46 SyntacticMatches, 19 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2433 ImplicationChecksByTransitivity, 3882.0ms TimeCoverageRelationStatistics Valid=621, Invalid=10721, Unknown=0, NotChecked=0, Total=11342 [2021-05-03 00:32:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-03 00:32:50,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 120. [2021-05-03 00:32:50,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.0344827586206897) internal successors, (120), 116 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2021-05-03 00:32:50,322 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 117 [2021-05-03 00:32:50,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:32:50,322 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2021-05-03 00:32:50,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 54 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2021-05-03 00:32:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-03 00:32:50,323 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:32:50,323 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:32:50,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-03 00:32:50,323 INFO L428 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:32:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:32:50,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1574299933, now seen corresponding path program 47 times [2021-05-03 00:32:50,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:32:50,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250099437] [2021-05-03 00:32:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:32:51,028 WARN L205 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 153 [2021-05-03 00:32:51,117 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_377 5) (<= 6 v_main_~c~0_1733)) InVars {main_~b~0=v_main_~b~0_377, main_~c~0=v_main_~c~0_1733} OutVars{main_~b~0=v_main_~b~0_377, main_~c~0=v_main_~c~0_1733} AuxVars[] AssignedVars[] [2021-05-03 00:32:51,118 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:51,119 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:51,121 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:51,138 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:51,154 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:51,155 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:51,162 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:51,168 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:51,171 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_377 5) (<= 6 v_main_~c~0_1733)) InVars {main_~b~0=v_main_~b~0_377, main_~c~0=v_main_~c~0_1733} OutVars{main_~b~0=v_main_~b~0_377, main_~c~0=v_main_~c~0_1733} AuxVars[] AssignedVars[] [2021-05-03 00:32:51,172 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:51,174 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:51,177 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:51,194 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:51,210 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:51,211 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:51,218 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:51,224 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:32:51,234 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:51,234 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:51,251 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:32:51,262 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:32:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:32:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:32:53,121 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:32:53,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250099437] [2021-05-03 00:32:53,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1250099437] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:32:53,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:32:53,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2021-05-03 00:32:53,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312283894] [2021-05-03 00:32:53,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-03 00:32:53,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:32:53,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-03 00:32:53,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2868, Unknown=0, NotChecked=0, Total=3080 [2021-05-03 00:32:53,123 INFO L87 Difference]: Start difference. First operand 120 states and 123 transitions. Second operand has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:57,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:32:57,052 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2021-05-03 00:32:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-03 00:32:57,052 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-05-03 00:32:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:32:57,053 INFO L225 Difference]: With dead ends: 141 [2021-05-03 00:32:57,053 INFO L226 Difference]: Without dead ends: 130 [2021-05-03 00:32:57,054 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 45 SyntacticMatches, 21 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2579 ImplicationChecksByTransitivity, 4014.9ms TimeCoverageRelationStatistics Valid=630, Invalid=11142, Unknown=0, NotChecked=0, Total=11772 [2021-05-03 00:32:57,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-03 00:32:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2021-05-03 00:32:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 118 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2021-05-03 00:32:57,109 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 119 [2021-05-03 00:32:57,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:32:57,110 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2021-05-03 00:32:57,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 55 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:32:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2021-05-03 00:32:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-03 00:32:57,110 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:32:57,110 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:32:57,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-03 00:32:57,111 INFO L428 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:32:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:32:57,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1139924991, now seen corresponding path program 48 times [2021-05-03 00:32:57,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:32:57,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406784222] [2021-05-03 00:32:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:32:57,938 WARN L205 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:32:58,013 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:58,014 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:58,022 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:58,029 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_397 5) (<= 6 v_main_~c~0_1792)) InVars {main_~b~0=v_main_~b~0_397, main_~c~0=v_main_~c~0_1792} OutVars{main_~b~0=v_main_~b~0_397, main_~c~0=v_main_~c~0_1792} AuxVars[] AssignedVars[] [2021-05-03 00:32:58,030 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:58,030 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:58,032 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:58,050 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:58,067 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1794 6) InVars {main_~c~0=v_main_~c~0_1794} OutVars{main_~c~0=v_main_~c~0_1794} AuxVars[] AssignedVars[] [2021-05-03 00:32:58,068 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:32:58,069 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:58,073 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:58,092 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:32:58,108 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:58,109 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:58,116 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:32:58,123 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_397 5) (<= 6 v_main_~c~0_1792)) InVars {main_~b~0=v_main_~b~0_397, main_~c~0=v_main_~c~0_1792} OutVars{main_~b~0=v_main_~b~0_397, main_~c~0=v_main_~c~0_1792} AuxVars[] AssignedVars[] [2021-05-03 00:32:58,124 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:32:58,124 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:58,126 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:32:58,144 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:32:58,162 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_1794 6) InVars {main_~c~0=v_main_~c~0_1794} OutVars{main_~c~0=v_main_~c~0_1794} AuxVars[] AssignedVars[] [2021-05-03 00:32:58,163 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:32:58,163 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:58,168 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:32:58,203 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:32:58,226 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:32:58,227 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:32:58,244 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:32:58,255 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:32:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:32:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:32:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:32:59,975 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:32:59,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406784222] [2021-05-03 00:32:59,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [406784222] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:32:59,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:32:59,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2021-05-03 00:32:59,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172702656] [2021-05-03 00:32:59,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-03 00:32:59,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:32:59,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-03 00:32:59,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2977, Unknown=0, NotChecked=0, Total=3192 [2021-05-03 00:32:59,977 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 56 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:33:04,126 INFO L93 Difference]: Finished difference Result 145 states and 156 transitions. [2021-05-03 00:33:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-03 00:33:04,127 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 56 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-05-03 00:33:04,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:33:04,127 INFO L225 Difference]: With dead ends: 145 [2021-05-03 00:33:04,127 INFO L226 Difference]: Without dead ends: 134 [2021-05-03 00:33:04,128 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 53 SyntacticMatches, 14 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2714 ImplicationChecksByTransitivity, 4006.0ms TimeCoverageRelationStatistics Valid=639, Invalid=11571, Unknown=0, NotChecked=0, Total=12210 [2021-05-03 00:33:04,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-05-03 00:33:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2021-05-03 00:33:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 122 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2021-05-03 00:33:04,224 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 121 [2021-05-03 00:33:04,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:33:04,224 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2021-05-03 00:33:04,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 56 states have internal predecessors, (118), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2021-05-03 00:33:04,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-03 00:33:04,225 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:33:04,225 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:33:04,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-03 00:33:04,225 INFO L428 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:33:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:33:04,225 INFO L82 PathProgramCache]: Analyzing trace with hash -317433441, now seen corresponding path program 49 times [2021-05-03 00:33:04,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:33:04,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217307106] [2021-05-03 00:33:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:33:04,980 WARN L205 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:33:05,085 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_417 5) (<= 6 v_main_~c~0_1847)) InVars {main_~b~0=v_main_~b~0_417, main_~c~0=v_main_~c~0_1847} OutVars{main_~b~0=v_main_~b~0_417, main_~c~0=v_main_~c~0_1847} AuxVars[] AssignedVars[] [2021-05-03 00:33:05,086 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:05,097 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:05,099 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:05,107 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:05,123 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:05,126 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_417 5) (<= 6 v_main_~c~0_1847)) InVars {main_~b~0=v_main_~b~0_417, main_~c~0=v_main_~c~0_1847} OutVars{main_~b~0=v_main_~b~0_417, main_~c~0=v_main_~c~0_1847} AuxVars[] AssignedVars[] [2021-05-03 00:33:05,127 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:05,138 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:05,140 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:05,148 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:05,165 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:05,174 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:05,174 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:05,192 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:33:05,203 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:33:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:33:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:33:07,161 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:33:07,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217307106] [2021-05-03 00:33:07,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1217307106] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:33:07,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:33:07,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2021-05-03 00:33:07,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610656169] [2021-05-03 00:33:07,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-03 00:33:07,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:33:07,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-03 00:33:07,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3088, Unknown=0, NotChecked=0, Total=3306 [2021-05-03 00:33:07,162 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 57 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:33:11,323 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2021-05-03 00:33:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-03 00:33:11,323 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 57 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2021-05-03 00:33:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:33:11,324 INFO L225 Difference]: With dead ends: 146 [2021-05-03 00:33:11,324 INFO L226 Difference]: Without dead ends: 135 [2021-05-03 00:33:11,325 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 48 SyntacticMatches, 20 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2964 ImplicationChecksByTransitivity, 4226.1ms TimeCoverageRelationStatistics Valid=648, Invalid=12008, Unknown=0, NotChecked=0, Total=12656 [2021-05-03 00:33:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-03 00:33:11,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 128. [2021-05-03 00:33:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 124 states have (on average 1.032258064516129) internal successors, (128), 124 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2021-05-03 00:33:11,390 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 123 [2021-05-03 00:33:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:33:11,390 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2021-05-03 00:33:11,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 57 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2021-05-03 00:33:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-05-03 00:33:11,391 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:33:11,391 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:33:11,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-03 00:33:11,391 INFO L428 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:33:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:33:11,391 INFO L82 PathProgramCache]: Analyzing trace with hash 727819726, now seen corresponding path program 50 times [2021-05-03 00:33:11,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:33:11,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325933772] [2021-05-03 00:33:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:33:12,121 WARN L205 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:33:12,230 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_437 5) (<= 6 v_main_~c~0_1898)) InVars {main_~b~0=v_main_~b~0_437, main_~c~0=v_main_~c~0_1898} OutVars{main_~b~0=v_main_~b~0_437, main_~c~0=v_main_~c~0_1898} AuxVars[] AssignedVars[] [2021-05-03 00:33:12,231 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:12,232 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:12,234 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:12,258 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:12,280 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:12,281 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:12,288 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:33:12,298 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:12,302 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_437 5) (<= 6 v_main_~c~0_1898)) InVars {main_~b~0=v_main_~b~0_437, main_~c~0=v_main_~c~0_1898} OutVars{main_~b~0=v_main_~b~0_437, main_~c~0=v_main_~c~0_1898} AuxVars[] AssignedVars[] [2021-05-03 00:33:12,303 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:12,305 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:12,307 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:12,327 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:12,346 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:12,346 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:12,352 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:33:12,357 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:12,366 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:12,366 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:12,384 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:33:12,395 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:33:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:33:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:33:14,228 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:33:14,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325933772] [2021-05-03 00:33:14,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [325933772] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:33:14,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:33:14,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2021-05-03 00:33:14,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954684118] [2021-05-03 00:33:14,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-03 00:33:14,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:33:14,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-03 00:33:14,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=3201, Unknown=0, NotChecked=0, Total=3422 [2021-05-03 00:33:14,229 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:33:18,487 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2021-05-03 00:33:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-03 00:33:18,487 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2021-05-03 00:33:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:33:18,488 INFO L225 Difference]: With dead ends: 148 [2021-05-03 00:33:18,488 INFO L226 Difference]: Without dead ends: 137 [2021-05-03 00:33:18,489 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 59 SyntacticMatches, 11 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2969 ImplicationChecksByTransitivity, 4144.3ms TimeCoverageRelationStatistics Valid=657, Invalid=12453, Unknown=0, NotChecked=0, Total=13110 [2021-05-03 00:33:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-03 00:33:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 129. [2021-05-03 00:33:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.032) internal successors, (129), 125 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2021-05-03 00:33:18,558 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 126 [2021-05-03 00:33:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:33:18,558 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2021-05-03 00:33:18,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 58 states have internal predecessors, (123), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2021-05-03 00:33:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-05-03 00:33:18,559 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:33:18,559 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:33:18,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-03 00:33:18,559 INFO L428 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:33:18,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:33:18,559 INFO L82 PathProgramCache]: Analyzing trace with hash -711090132, now seen corresponding path program 51 times [2021-05-03 00:33:18,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:33:18,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307338697] [2021-05-03 00:33:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:33:19,348 WARN L205 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:33:19,422 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_457 5) (<= 6 v_main_~c~0_1958)) InVars {main_~b~0=v_main_~b~0_457, main_~c~0=v_main_~c~0_1958} OutVars{main_~b~0=v_main_~b~0_457, main_~c~0=v_main_~c~0_1958} AuxVars[] AssignedVars[] [2021-05-03 00:33:19,423 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:19,424 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:19,426 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:19,443 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:19,460 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:19,460 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:19,468 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:33:19,473 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:19,477 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_457 5) (<= 6 v_main_~c~0_1958)) InVars {main_~b~0=v_main_~b~0_457, main_~c~0=v_main_~c~0_1958} OutVars{main_~b~0=v_main_~b~0_457, main_~c~0=v_main_~c~0_1958} AuxVars[] AssignedVars[] [2021-05-03 00:33:19,478 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:19,478 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:19,480 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:19,498 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:19,514 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:19,515 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:19,525 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:33:19,531 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:19,540 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:19,540 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:19,558 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:33:19,569 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:33:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:33:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:33:21,665 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:33:21,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307338697] [2021-05-03 00:33:21,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [307338697] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:33:21,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:33:21,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-05-03 00:33:21,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092973329] [2021-05-03 00:33:21,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-03 00:33:21,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:33:21,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-03 00:33:21,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3316, Unknown=0, NotChecked=0, Total=3540 [2021-05-03 00:33:21,667 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:33:26,059 INFO L93 Difference]: Finished difference Result 150 states and 160 transitions. [2021-05-03 00:33:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-03 00:33:26,060 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2021-05-03 00:33:26,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:33:26,060 INFO L225 Difference]: With dead ends: 150 [2021-05-03 00:33:26,061 INFO L226 Difference]: Without dead ends: 139 [2021-05-03 00:33:26,061 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 49 SyntacticMatches, 22 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3182 ImplicationChecksByTransitivity, 4495.0ms TimeCoverageRelationStatistics Valid=666, Invalid=12906, Unknown=0, NotChecked=0, Total=13572 [2021-05-03 00:33:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-03 00:33:26,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2021-05-03 00:33:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.031496062992126) internal successors, (131), 127 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2021-05-03 00:33:26,135 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 128 [2021-05-03 00:33:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:33:26,135 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2021-05-03 00:33:26,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2021-05-03 00:33:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-05-03 00:33:26,135 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:33:26,135 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:33:26,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-03 00:33:26,136 INFO L428 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:33:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:33:26,136 INFO L82 PathProgramCache]: Analyzing trace with hash -523994358, now seen corresponding path program 52 times [2021-05-03 00:33:26,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:33:26,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648510756] [2021-05-03 00:33:26,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:33:26,945 WARN L205 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 153 [2021-05-03 00:33:27,021 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_477 5) (<= 6 v_main_~c~0_2018)) InVars {main_~b~0=v_main_~b~0_477, main_~c~0=v_main_~c~0_2018} OutVars{main_~b~0=v_main_~b~0_477, main_~c~0=v_main_~c~0_2018} AuxVars[] AssignedVars[] [2021-05-03 00:33:27,022 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:27,022 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:27,024 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:27,042 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:27,058 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:27,059 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:27,066 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:33:27,072 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:27,076 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_477 5) (<= 6 v_main_~c~0_2018)) InVars {main_~b~0=v_main_~b~0_477, main_~c~0=v_main_~c~0_2018} OutVars{main_~b~0=v_main_~b~0_477, main_~c~0=v_main_~c~0_2018} AuxVars[] AssignedVars[] [2021-05-03 00:33:27,076 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:27,088 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:27,090 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:27,098 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:27,114 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:27,115 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:27,122 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:33:27,128 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:27,137 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:27,138 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:27,156 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:33:27,167 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:33:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:27,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:33:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:33:29,230 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:33:29,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648510756] [2021-05-03 00:33:29,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [648510756] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:33:29,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:33:29,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2021-05-03 00:33:29,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803522216] [2021-05-03 00:33:29,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-03 00:33:29,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:33:29,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-03 00:33:29,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=3433, Unknown=0, NotChecked=0, Total=3660 [2021-05-03 00:33:29,231 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:33:33,808 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2021-05-03 00:33:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-03 00:33:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130 [2021-05-03 00:33:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:33:33,810 INFO L225 Difference]: With dead ends: 152 [2021-05-03 00:33:33,810 INFO L226 Difference]: Without dead ends: 141 [2021-05-03 00:33:33,811 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 51 SyntacticMatches, 21 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3393 ImplicationChecksByTransitivity, 4542.2ms TimeCoverageRelationStatistics Valid=675, Invalid=13367, Unknown=0, NotChecked=0, Total=14042 [2021-05-03 00:33:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-05-03 00:33:33,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2021-05-03 00:33:33,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.0310077519379846) internal successors, (133), 129 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 136 transitions. [2021-05-03 00:33:33,891 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 136 transitions. Word has length 130 [2021-05-03 00:33:33,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:33:33,892 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 136 transitions. [2021-05-03 00:33:33,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:33,892 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 136 transitions. [2021-05-03 00:33:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-05-03 00:33:33,892 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:33:33,892 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:33:33,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-03 00:33:33,892 INFO L428 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:33:33,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:33:33,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1113581976, now seen corresponding path program 53 times [2021-05-03 00:33:33,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:33:33,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060605659] [2021-05-03 00:33:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:33:34,617 WARN L205 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:33:34,699 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_497 5) (<= 6 v_main_~c~0_2078)) InVars {main_~b~0=v_main_~b~0_497, main_~c~0=v_main_~c~0_2078} OutVars{main_~b~0=v_main_~b~0_497, main_~c~0=v_main_~c~0_2078} AuxVars[] AssignedVars[] [2021-05-03 00:33:34,700 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:34,711 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:34,714 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:34,722 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:34,747 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:34,748 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:34,748 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:34,756 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:33:34,765 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_497 5) (<= 6 v_main_~c~0_2078)) InVars {main_~b~0=v_main_~b~0_497, main_~c~0=v_main_~c~0_2078} OutVars{main_~b~0=v_main_~b~0_497, main_~c~0=v_main_~c~0_2078} AuxVars[] AssignedVars[] [2021-05-03 00:33:34,766 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:34,766 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:34,768 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:34,786 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:34,804 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:34,804 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:34,805 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:34,813 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:33:34,827 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:34,828 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:34,847 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:33:34,859 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:33:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:34,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:33:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:33:36,981 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:33:36,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060605659] [2021-05-03 00:33:36,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2060605659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:33:36,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:33:36,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-05-03 00:33:36,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875318721] [2021-05-03 00:33:36,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-03 00:33:36,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:33:36,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-03 00:33:36,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3552, Unknown=0, NotChecked=0, Total=3782 [2021-05-03 00:33:36,982 INFO L87 Difference]: Start difference. First operand 133 states and 136 transitions. Second operand has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:42,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:33:42,272 INFO L93 Difference]: Finished difference Result 154 states and 164 transitions. [2021-05-03 00:33:42,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-03 00:33:42,273 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 132 [2021-05-03 00:33:42,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:33:42,273 INFO L225 Difference]: With dead ends: 154 [2021-05-03 00:33:42,273 INFO L226 Difference]: Without dead ends: 143 [2021-05-03 00:33:42,274 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 55 SyntacticMatches, 18 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 4628.9ms TimeCoverageRelationStatistics Valid=684, Invalid=13836, Unknown=0, NotChecked=0, Total=14520 [2021-05-03 00:33:42,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-03 00:33:42,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 135. [2021-05-03 00:33:42,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 131 states have (on average 1.0305343511450382) internal successors, (135), 131 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 138 transitions. [2021-05-03 00:33:42,343 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 138 transitions. Word has length 132 [2021-05-03 00:33:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:33:42,343 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 138 transitions. [2021-05-03 00:33:42,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 2.0806451612903225) internal successors, (129), 61 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 138 transitions. [2021-05-03 00:33:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-05-03 00:33:42,344 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:33:42,344 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:33:42,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-03 00:33:42,344 INFO L428 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:33:42,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:33:42,344 INFO L82 PathProgramCache]: Analyzing trace with hash -771599802, now seen corresponding path program 54 times [2021-05-03 00:33:42,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:33:42,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540492233] [2021-05-03 00:33:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:33:43,094 WARN L205 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:33:43,174 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2138) (< v_main_~b~0_517 5)) InVars {main_~b~0=v_main_~b~0_517, main_~c~0=v_main_~c~0_2138} OutVars{main_~b~0=v_main_~b~0_517, main_~c~0=v_main_~c~0_2138} AuxVars[] AssignedVars[] [2021-05-03 00:33:43,175 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:43,175 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:43,177 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:43,195 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:43,213 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:43,213 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:43,221 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:33:43,227 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:43,231 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2138) (< v_main_~b~0_517 5)) InVars {main_~b~0=v_main_~b~0_517, main_~c~0=v_main_~c~0_2138} OutVars{main_~b~0=v_main_~b~0_517, main_~c~0=v_main_~c~0_2138} AuxVars[] AssignedVars[] [2021-05-03 00:33:43,232 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:43,232 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:43,235 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:43,253 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:43,270 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:43,271 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:43,279 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:33:43,285 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:33:43,295 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:43,296 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:43,314 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:33:43,325 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:33:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:43,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:33:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:33:45,504 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:33:45,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540492233] [2021-05-03 00:33:45,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [540492233] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:33:45,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:33:45,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2021-05-03 00:33:45,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23773267] [2021-05-03 00:33:45,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-03 00:33:45,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:33:45,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-03 00:33:45,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3673, Unknown=0, NotChecked=0, Total=3906 [2021-05-03 00:33:45,507 INFO L87 Difference]: Start difference. First operand 135 states and 138 transitions. Second operand has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:33:50,859 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2021-05-03 00:33:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-03 00:33:50,859 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134 [2021-05-03 00:33:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:33:50,860 INFO L225 Difference]: With dead ends: 156 [2021-05-03 00:33:50,860 INFO L226 Difference]: Without dead ends: 145 [2021-05-03 00:33:50,861 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 54 SyntacticMatches, 20 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3677 ImplicationChecksByTransitivity, 4818.8ms TimeCoverageRelationStatistics Valid=693, Invalid=14313, Unknown=0, NotChecked=0, Total=15006 [2021-05-03 00:33:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-05-03 00:33:50,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 137. [2021-05-03 00:33:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 133 states have (on average 1.0300751879699248) internal successors, (137), 133 states have internal predecessors, (137), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2021-05-03 00:33:50,930 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 134 [2021-05-03 00:33:50,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:33:50,930 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2021-05-03 00:33:50,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2021-05-03 00:33:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-05-03 00:33:50,931 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:33:50,931 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:33:50,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-03 00:33:50,931 INFO L428 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:33:50,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:33:50,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1455754916, now seen corresponding path program 55 times [2021-05-03 00:33:50,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:33:50,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460209767] [2021-05-03 00:33:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:33:51,652 WARN L205 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 158 [2021-05-03 00:33:51,729 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:51,729 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:51,737 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:33:51,744 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_537 5) (<= 6 v_main_~c~0_2200)) InVars {main_~b~0=v_main_~b~0_537, main_~c~0=v_main_~c~0_2200} OutVars{main_~b~0=v_main_~b~0_537, main_~c~0=v_main_~c~0_2200} AuxVars[] AssignedVars[] [2021-05-03 00:33:51,745 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:51,746 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:51,748 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:51,766 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:51,785 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_2202 6) InVars {main_~c~0=v_main_~c~0_2202} OutVars{main_~c~0=v_main_~c~0_2202} AuxVars[] AssignedVars[] [2021-05-03 00:33:51,786 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:33:51,797 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:51,802 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:33:51,811 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:33:51,827 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:51,827 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:51,835 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:33:51,842 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_537 5) (<= 6 v_main_~c~0_2200)) InVars {main_~b~0=v_main_~b~0_537, main_~c~0=v_main_~c~0_2200} OutVars{main_~b~0=v_main_~b~0_537, main_~c~0=v_main_~c~0_2200} AuxVars[] AssignedVars[] [2021-05-03 00:33:51,843 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:33:51,854 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:51,857 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:33:51,865 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:33:51,883 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_2202 6) InVars {main_~c~0=v_main_~c~0_2202} OutVars{main_~c~0=v_main_~c~0_2202} AuxVars[] AssignedVars[] [2021-05-03 00:33:51,884 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:33:51,885 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:51,889 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:33:51,907 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:33:51,931 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:33:51,931 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:33:51,949 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:33:51,960 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:33:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:33:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:33:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:33:54,200 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:33:54,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460209767] [2021-05-03 00:33:54,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1460209767] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:33:54,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:33:54,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2021-05-03 00:33:54,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251038157] [2021-05-03 00:33:54,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-03 00:33:54,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:33:54,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-03 00:33:54,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3796, Unknown=0, NotChecked=0, Total=4032 [2021-05-03 00:33:54,201 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:33:59,740 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2021-05-03 00:33:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-03 00:33:59,740 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2021-05-03 00:33:59,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:33:59,741 INFO L225 Difference]: With dead ends: 160 [2021-05-03 00:33:59,741 INFO L226 Difference]: Without dead ends: 149 [2021-05-03 00:33:59,742 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 56 SyntacticMatches, 19 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3861 ImplicationChecksByTransitivity, 4896.4ms TimeCoverageRelationStatistics Valid=702, Invalid=14798, Unknown=0, NotChecked=0, Total=15500 [2021-05-03 00:33:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-03 00:33:59,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2021-05-03 00:33:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 137 states have internal predecessors, (141), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2021-05-03 00:33:59,820 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 136 [2021-05-03 00:33:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:33:59,820 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2021-05-03 00:33:59,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:33:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2021-05-03 00:33:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-05-03 00:33:59,820 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:33:59,820 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:33:59,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-03 00:33:59,821 INFO L428 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:33:59,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:33:59,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1245041790, now seen corresponding path program 56 times [2021-05-03 00:33:59,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:33:59,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213362444] [2021-05-03 00:33:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:34:00,541 WARN L205 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:34:00,617 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2258) (< v_main_~b~0_557 5)) InVars {main_~b~0=v_main_~b~0_557, main_~c~0=v_main_~c~0_2258} OutVars{main_~b~0=v_main_~b~0_557, main_~c~0=v_main_~c~0_2258} AuxVars[] AssignedVars[] [2021-05-03 00:34:00,619 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:00,619 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:00,621 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:00,639 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:00,656 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:34:00,659 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2258) (< v_main_~b~0_557 5)) InVars {main_~b~0=v_main_~b~0_557, main_~c~0=v_main_~c~0_2258} OutVars{main_~b~0=v_main_~b~0_557, main_~c~0=v_main_~c~0_2258} AuxVars[] AssignedVars[] [2021-05-03 00:34:00,660 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:00,661 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:00,663 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:00,681 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:00,697 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:34:00,707 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:00,708 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:00,725 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:34:00,737 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:34:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:34:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:34:02,947 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:34:02,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213362444] [2021-05-03 00:34:02,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [213362444] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:34:02,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:34:02,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2021-05-03 00:34:02,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796361817] [2021-05-03 00:34:02,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-03 00:34:02,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:34:02,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-03 00:34:02,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=3921, Unknown=0, NotChecked=0, Total=4160 [2021-05-03 00:34:02,948 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:34:08,076 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2021-05-03 00:34:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-03 00:34:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2021-05-03 00:34:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:34:08,077 INFO L225 Difference]: With dead ends: 161 [2021-05-03 00:34:08,077 INFO L226 Difference]: Without dead ends: 150 [2021-05-03 00:34:08,078 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 55 SyntacticMatches, 21 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3979 ImplicationChecksByTransitivity, 4974.2ms TimeCoverageRelationStatistics Valid=711, Invalid=15291, Unknown=0, NotChecked=0, Total=16002 [2021-05-03 00:34:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-05-03 00:34:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2021-05-03 00:34:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 139 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2021-05-03 00:34:08,167 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 138 [2021-05-03 00:34:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:34:08,167 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2021-05-03 00:34:08,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.076923076923077) internal successors, (135), 64 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2021-05-03 00:34:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-03 00:34:08,168 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:34:08,168 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:34:08,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-03 00:34:08,168 INFO L428 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:34:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:34:08,169 INFO L82 PathProgramCache]: Analyzing trace with hash 167077131, now seen corresponding path program 57 times [2021-05-03 00:34:08,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:34:08,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972426534] [2021-05-03 00:34:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:34:08,910 WARN L205 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:34:08,987 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_577 5) (<= 6 v_main_~c~0_2312)) InVars {main_~b~0=v_main_~b~0_577, main_~c~0=v_main_~c~0_2312} OutVars{main_~b~0=v_main_~b~0_577, main_~c~0=v_main_~c~0_2312} AuxVars[] AssignedVars[] [2021-05-03 00:34:08,988 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:09,000 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:09,002 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:09,011 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:09,028 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:09,028 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:09,034 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:34:09,040 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_2316 6) InVars {main_~c~0=v_main_~c~0_2316} OutVars{main_~c~0=v_main_~c~0_2316} AuxVars[] AssignedVars[] [2021-05-03 00:34:09,041 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:34:09,042 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:09,046 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:34:09,064 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:34:09,082 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_577 5) (<= 6 v_main_~c~0_2312)) InVars {main_~b~0=v_main_~b~0_577, main_~c~0=v_main_~c~0_2312} OutVars{main_~b~0=v_main_~b~0_577, main_~c~0=v_main_~c~0_2312} AuxVars[] AssignedVars[] [2021-05-03 00:34:09,083 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:09,094 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:09,096 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:09,105 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:09,122 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:09,122 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:09,128 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:34:09,134 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_2316 6) InVars {main_~c~0=v_main_~c~0_2316} OutVars{main_~c~0=v_main_~c~0_2316} AuxVars[] AssignedVars[] [2021-05-03 00:34:09,135 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:34:09,136 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:09,141 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:34:09,167 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:34:09,191 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:09,192 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:09,211 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:34:09,222 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:34:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:34:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:34:11,454 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:34:11,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972426534] [2021-05-03 00:34:11,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [972426534] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:34:11,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:34:11,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2021-05-03 00:34:11,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047939163] [2021-05-03 00:34:11,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-03 00:34:11,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:34:11,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-03 00:34:11,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4048, Unknown=0, NotChecked=0, Total=4290 [2021-05-03 00:34:11,456 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand has 66 states, 66 states have (on average 2.090909090909091) internal successors, (138), 65 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:16,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:34:16,639 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2021-05-03 00:34:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-03 00:34:16,639 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.090909090909091) internal successors, (138), 65 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-03 00:34:16,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:34:16,640 INFO L225 Difference]: With dead ends: 163 [2021-05-03 00:34:16,640 INFO L226 Difference]: Without dead ends: 152 [2021-05-03 00:34:16,641 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 66 SyntacticMatches, 12 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4049 ImplicationChecksByTransitivity, 5025.5ms TimeCoverageRelationStatistics Valid=720, Invalid=15792, Unknown=0, NotChecked=0, Total=16512 [2021-05-03 00:34:16,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-03 00:34:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2021-05-03 00:34:16,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.0285714285714285) internal successors, (144), 140 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2021-05-03 00:34:16,722 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 141 [2021-05-03 00:34:16,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:34:16,722 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2021-05-03 00:34:16,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.090909090909091) internal successors, (138), 65 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:16,723 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2021-05-03 00:34:16,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-03 00:34:16,723 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:34:16,723 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:34:16,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-03 00:34:16,723 INFO L428 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:34:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:34:16,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1581155369, now seen corresponding path program 58 times [2021-05-03 00:34:16,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:34:16,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744598241] [2021-05-03 00:34:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:34:17,428 WARN L205 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 153 [2021-05-03 00:34:17,514 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2375) (< v_main_~b~0_597 5)) InVars {main_~b~0=v_main_~b~0_597, main_~c~0=v_main_~c~0_2375} OutVars{main_~b~0=v_main_~b~0_597, main_~c~0=v_main_~c~0_2375} AuxVars[] AssignedVars[] [2021-05-03 00:34:17,515 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:17,526 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:17,529 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:17,537 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:17,554 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:17,557 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:17,565 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:34:17,571 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:34:17,575 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2375) (< v_main_~b~0_597 5)) InVars {main_~b~0=v_main_~b~0_597, main_~c~0=v_main_~c~0_2375} OutVars{main_~b~0=v_main_~b~0_597, main_~c~0=v_main_~c~0_2375} AuxVars[] AssignedVars[] [2021-05-03 00:34:17,576 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:17,587 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:17,590 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:17,599 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:17,616 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:17,617 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:17,625 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:34:17,631 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:34:17,642 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:17,642 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:17,660 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:34:17,671 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:34:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:34:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:34:19,945 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:34:19,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744598241] [2021-05-03 00:34:19,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1744598241] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:34:19,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:34:19,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2021-05-03 00:34:19,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138368028] [2021-05-03 00:34:19,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-03 00:34:19,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:34:19,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-03 00:34:19,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=4177, Unknown=0, NotChecked=0, Total=4422 [2021-05-03 00:34:19,946 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand has 67 states, 67 states have (on average 2.08955223880597) internal successors, (140), 66 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:34:25,434 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2021-05-03 00:34:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-03 00:34:25,434 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.08955223880597) internal successors, (140), 66 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-03 00:34:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:34:25,435 INFO L225 Difference]: With dead ends: 165 [2021-05-03 00:34:25,435 INFO L226 Difference]: Without dead ends: 154 [2021-05-03 00:34:25,436 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 63 SyntacticMatches, 16 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4287 ImplicationChecksByTransitivity, 5152.4ms TimeCoverageRelationStatistics Valid=729, Invalid=16301, Unknown=0, NotChecked=0, Total=17030 [2021-05-03 00:34:25,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-03 00:34:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 146. [2021-05-03 00:34:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.028169014084507) internal successors, (146), 142 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2021-05-03 00:34:25,542 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 143 [2021-05-03 00:34:25,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:34:25,543 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2021-05-03 00:34:25,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.08955223880597) internal successors, (140), 66 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2021-05-03 00:34:25,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-03 00:34:25,543 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:34:25,544 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:34:25,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-03 00:34:25,544 INFO L428 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:34:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:34:25,544 INFO L82 PathProgramCache]: Analyzing trace with hash -994290745, now seen corresponding path program 59 times [2021-05-03 00:34:25,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:34:25,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788641407] [2021-05-03 00:34:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:34:26,279 WARN L205 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 152 [2021-05-03 00:34:26,356 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2438) (< v_main_~b~0_617 5)) InVars {main_~b~0=v_main_~b~0_617, main_~c~0=v_main_~c~0_2438} OutVars{main_~b~0=v_main_~b~0_617, main_~c~0=v_main_~c~0_2438} AuxVars[] AssignedVars[] [2021-05-03 00:34:26,357 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:26,369 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:26,371 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:26,380 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:26,397 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:26,398 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:26,406 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:34:26,414 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_2442 6) InVars {main_~c~0=v_main_~c~0_2442} OutVars{main_~c~0=v_main_~c~0_2442} AuxVars[] AssignedVars[] [2021-05-03 00:34:26,415 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:34:26,427 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:26,431 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:34:26,441 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:34:26,459 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2438) (< v_main_~b~0_617 5)) InVars {main_~b~0=v_main_~b~0_617, main_~c~0=v_main_~c~0_2438} OutVars{main_~b~0=v_main_~b~0_617, main_~c~0=v_main_~c~0_2438} AuxVars[] AssignedVars[] [2021-05-03 00:34:26,460 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:26,460 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:26,462 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:26,481 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:26,498 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:26,499 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:26,506 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:34:26,514 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_2442 6) InVars {main_~c~0=v_main_~c~0_2442} OutVars{main_~c~0=v_main_~c~0_2442} AuxVars[] AssignedVars[] [2021-05-03 00:34:26,515 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:34:26,526 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:26,531 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:34:26,540 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:34:26,565 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:26,565 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:26,589 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:34:26,601 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:34:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:34:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:34:29,056 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:34:29,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788641407] [2021-05-03 00:34:29,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [788641407] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:34:29,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:34:29,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2021-05-03 00:34:29,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923104268] [2021-05-03 00:34:29,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-03 00:34:29,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:34:29,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-03 00:34:29,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4308, Unknown=0, NotChecked=0, Total=4556 [2021-05-03 00:34:29,058 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 67 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:34,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:34:34,563 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2021-05-03 00:34:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-03 00:34:34,563 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 67 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-05-03 00:34:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:34:34,564 INFO L225 Difference]: With dead ends: 167 [2021-05-03 00:34:34,564 INFO L226 Difference]: Without dead ends: 156 [2021-05-03 00:34:34,565 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 58 SyntacticMatches, 22 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4443 ImplicationChecksByTransitivity, 5410.4ms TimeCoverageRelationStatistics Valid=738, Invalid=16818, Unknown=0, NotChecked=0, Total=17556 [2021-05-03 00:34:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-05-03 00:34:34,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 148. [2021-05-03 00:34:34,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 144 states have (on average 1.0277777777777777) internal successors, (148), 144 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:34,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 151 transitions. [2021-05-03 00:34:34,650 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 151 transitions. Word has length 145 [2021-05-03 00:34:34,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:34:34,650 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 151 transitions. [2021-05-03 00:34:34,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 67 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 151 transitions. [2021-05-03 00:34:34,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-03 00:34:34,651 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:34:34,651 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:34:34,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-03 00:34:34,651 INFO L428 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:34:34,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:34:34,651 INFO L82 PathProgramCache]: Analyzing trace with hash -2096843803, now seen corresponding path program 60 times [2021-05-03 00:34:34,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:34:34,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265044843] [2021-05-03 00:34:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:34:35,384 WARN L205 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:34:35,461 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_637 5) (<= 6 v_main_~c~0_2501)) InVars {main_~b~0=v_main_~b~0_637, main_~c~0=v_main_~c~0_2501} OutVars{main_~b~0=v_main_~b~0_637, main_~c~0=v_main_~c~0_2501} AuxVars[] AssignedVars[] [2021-05-03 00:34:35,462 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:35,474 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:35,476 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:35,484 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:35,502 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:34:35,503 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:35,503 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:35,512 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:34:35,521 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_637 5) (<= 6 v_main_~c~0_2501)) InVars {main_~b~0=v_main_~b~0_637, main_~c~0=v_main_~c~0_2501} OutVars{main_~b~0=v_main_~b~0_637, main_~c~0=v_main_~c~0_2501} AuxVars[] AssignedVars[] [2021-05-03 00:34:35,522 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:35,523 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:35,525 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:35,544 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:35,561 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:34:35,562 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:35,562 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:35,570 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:34:35,587 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:35,588 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:35,606 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:34:35,618 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:34:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:35,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:34:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:34:38,036 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:34:38,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265044843] [2021-05-03 00:34:38,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [265044843] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:34:38,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:34:38,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2021-05-03 00:34:38,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625922749] [2021-05-03 00:34:38,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-03 00:34:38,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:34:38,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-03 00:34:38,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=4441, Unknown=0, NotChecked=0, Total=4692 [2021-05-03 00:34:38,037 INFO L87 Difference]: Start difference. First operand 148 states and 151 transitions. Second operand has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 68 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:34:43,708 INFO L93 Difference]: Finished difference Result 169 states and 179 transitions. [2021-05-03 00:34:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-03 00:34:43,709 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 68 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147 [2021-05-03 00:34:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:34:43,709 INFO L225 Difference]: With dead ends: 169 [2021-05-03 00:34:43,709 INFO L226 Difference]: Without dead ends: 158 [2021-05-03 00:34:43,710 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 62 SyntacticMatches, 19 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4537 ImplicationChecksByTransitivity, 5419.6ms TimeCoverageRelationStatistics Valid=747, Invalid=17343, Unknown=0, NotChecked=0, Total=18090 [2021-05-03 00:34:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-03 00:34:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2021-05-03 00:34:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 146 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2021-05-03 00:34:43,801 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 147 [2021-05-03 00:34:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:34:43,801 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2021-05-03 00:34:43,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.0869565217391304) internal successors, (144), 68 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2021-05-03 00:34:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-03 00:34:43,802 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:34:43,802 INFO L523 BasicCegarLoop]: trace histogram [52, 52, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:34:43,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-03 00:34:43,802 INFO L428 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:34:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:34:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash -793410429, now seen corresponding path program 61 times [2021-05-03 00:34:43,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:34:43,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147057551] [2021-05-03 00:34:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:34:44,538 WARN L205 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:34:44,617 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_657 5) (<= 6 v_main_~c~0_2564)) InVars {main_~b~0=v_main_~b~0_657, main_~c~0=v_main_~c~0_2564} OutVars{main_~b~0=v_main_~b~0_657, main_~c~0=v_main_~c~0_2564} AuxVars[] AssignedVars[] [2021-05-03 00:34:44,618 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:44,630 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:44,632 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:44,641 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:44,658 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:44,662 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:44,670 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:34:44,681 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_2568 6) InVars {main_~c~0=v_main_~c~0_2568} OutVars{main_~c~0=v_main_~c~0_2568} AuxVars[] AssignedVars[] [2021-05-03 00:34:44,682 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:34:44,694 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:44,698 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:34:44,708 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:34:44,726 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_657 5) (<= 6 v_main_~c~0_2564)) InVars {main_~b~0=v_main_~b~0_657, main_~c~0=v_main_~c~0_2564} OutVars{main_~b~0=v_main_~b~0_657, main_~c~0=v_main_~c~0_2564} AuxVars[] AssignedVars[] [2021-05-03 00:34:44,727 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:44,728 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:44,730 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:44,757 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:44,775 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:44,776 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:44,783 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:34:44,791 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_2568 6) InVars {main_~c~0=v_main_~c~0_2568} OutVars{main_~c~0=v_main_~c~0_2568} AuxVars[] AssignedVars[] [2021-05-03 00:34:44,792 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:34:44,793 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:44,798 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:34:44,817 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:34:44,854 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:44,854 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:44,872 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:34:44,885 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:34:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:34:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:34:47,455 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:34:47,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147057551] [2021-05-03 00:34:47,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1147057551] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:34:47,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:34:47,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-05-03 00:34:47,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998008528] [2021-05-03 00:34:47,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-03 00:34:47,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:34:47,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-03 00:34:47,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4576, Unknown=0, NotChecked=0, Total=4830 [2021-05-03 00:34:47,457 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand has 70 states, 70 states have (on average 2.085714285714286) internal successors, (146), 69 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:53,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:34:53,292 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2021-05-03 00:34:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-03 00:34:53,292 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.085714285714286) internal successors, (146), 69 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-05-03 00:34:53,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:34:53,293 INFO L225 Difference]: With dead ends: 171 [2021-05-03 00:34:53,293 INFO L226 Difference]: Without dead ends: 160 [2021-05-03 00:34:53,294 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 62 SyntacticMatches, 20 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4697 ImplicationChecksByTransitivity, 5669.2ms TimeCoverageRelationStatistics Valid=756, Invalid=17876, Unknown=0, NotChecked=0, Total=18632 [2021-05-03 00:34:53,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-03 00:34:53,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2021-05-03 00:34:53,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 148 states have (on average 1.027027027027027) internal successors, (152), 148 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 155 transitions. [2021-05-03 00:34:53,413 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 155 transitions. Word has length 149 [2021-05-03 00:34:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:34:53,413 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 155 transitions. [2021-05-03 00:34:53,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.085714285714286) internal successors, (146), 69 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:34:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 155 transitions. [2021-05-03 00:34:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-03 00:34:53,414 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:34:53,414 INFO L523 BasicCegarLoop]: trace histogram [53, 53, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:34:53,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-03 00:34:53,414 INFO L428 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:34:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:34:53,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1970578849, now seen corresponding path program 62 times [2021-05-03 00:34:53,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:34:53,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674760603] [2021-05-03 00:34:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:34:54,135 WARN L205 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 152 [2021-05-03 00:34:54,232 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:54,232 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:54,241 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:34:54,249 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_677 5) (<= 6 v_main_~c~0_2629)) InVars {main_~b~0=v_main_~b~0_677, main_~c~0=v_main_~c~0_2629} OutVars{main_~b~0=v_main_~b~0_677, main_~c~0=v_main_~c~0_2629} AuxVars[] AssignedVars[] [2021-05-03 00:34:54,250 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:54,250 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:54,254 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:54,273 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:54,292 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_2631 6) InVars {main_~c~0=v_main_~c~0_2631} OutVars{main_~c~0=v_main_~c~0_2631} AuxVars[] AssignedVars[] [2021-05-03 00:34:54,293 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:34:54,304 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:54,309 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:34:54,318 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:34:54,335 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:54,338 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:54,347 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:34:54,354 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_677 5) (<= 6 v_main_~c~0_2629)) InVars {main_~b~0=v_main_~b~0_677, main_~c~0=v_main_~c~0_2629} OutVars{main_~b~0=v_main_~b~0_677, main_~c~0=v_main_~c~0_2629} AuxVars[] AssignedVars[] [2021-05-03 00:34:54,355 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:34:54,356 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:54,358 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:34:54,377 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:34:54,397 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_2631 6) InVars {main_~c~0=v_main_~c~0_2631} OutVars{main_~c~0=v_main_~c~0_2631} AuxVars[] AssignedVars[] [2021-05-03 00:34:54,398 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:34:54,409 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:54,414 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:34:54,423 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:34:54,450 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:34:54,451 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:34:54,470 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:34:54,482 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:34:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:54,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:34:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:34:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:34:57,318 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:34:57,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674760603] [2021-05-03 00:34:57,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1674760603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:34:57,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:34:57,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2021-05-03 00:34:57,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141783885] [2021-05-03 00:34:57,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-03 00:34:57,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:34:57,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-03 00:34:57,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=4713, Unknown=0, NotChecked=0, Total=4970 [2021-05-03 00:34:57,320 INFO L87 Difference]: Start difference. First operand 152 states and 155 transitions. Second operand has 71 states, 71 states have (on average 2.084507042253521) internal successors, (148), 70 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:35:03,924 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2021-05-03 00:35:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-03 00:35:03,925 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.084507042253521) internal successors, (148), 70 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2021-05-03 00:35:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:35:03,926 INFO L225 Difference]: With dead ends: 175 [2021-05-03 00:35:03,926 INFO L226 Difference]: Without dead ends: 164 [2021-05-03 00:35:03,927 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 55 SyntacticMatches, 28 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5159 ImplicationChecksByTransitivity, 6035.1ms TimeCoverageRelationStatistics Valid=765, Invalid=18417, Unknown=0, NotChecked=0, Total=19182 [2021-05-03 00:35:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-05-03 00:35:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2021-05-03 00:35:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.0263157894736843) internal successors, (156), 152 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 159 transitions. [2021-05-03 00:35:04,045 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 159 transitions. Word has length 151 [2021-05-03 00:35:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:35:04,045 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 159 transitions. [2021-05-03 00:35:04,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.084507042253521) internal successors, (148), 70 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 159 transitions. [2021-05-03 00:35:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-03 00:35:04,046 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:35:04,046 INFO L523 BasicCegarLoop]: trace histogram [54, 54, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:35:04,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-03 00:35:04,046 INFO L428 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:35:04,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:35:04,047 INFO L82 PathProgramCache]: Analyzing trace with hash -420481217, now seen corresponding path program 63 times [2021-05-03 00:35:04,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:35:04,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10126678] [2021-05-03 00:35:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:35:04,875 WARN L205 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:35:04,994 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2690) (< v_main_~b~0_697 5)) InVars {main_~b~0=v_main_~b~0_697, main_~c~0=v_main_~c~0_2690} OutVars{main_~b~0=v_main_~b~0_697, main_~c~0=v_main_~c~0_2690} AuxVars[] AssignedVars[] [2021-05-03 00:35:04,995 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:35:04,996 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:04,998 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:35:05,020 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:35:05,039 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:35:05,043 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2690) (< v_main_~b~0_697 5)) InVars {main_~b~0=v_main_~b~0_697, main_~c~0=v_main_~c~0_2690} OutVars{main_~b~0=v_main_~b~0_697, main_~c~0=v_main_~c~0_2690} AuxVars[] AssignedVars[] [2021-05-03 00:35:05,044 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:35:05,044 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:05,047 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:35:05,068 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:35:05,086 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:35:05,099 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:05,099 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:05,119 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:35:05,132 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:35:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:35:05,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:35:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:35:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:35:08,020 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:35:08,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10126678] [2021-05-03 00:35:08,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [10126678] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:35:08,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:35:08,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2021-05-03 00:35:08,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988452302] [2021-05-03 00:35:08,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-03 00:35:08,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:35:08,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-03 00:35:08,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=4852, Unknown=0, NotChecked=0, Total=5112 [2021-05-03 00:35:08,022 INFO L87 Difference]: Start difference. First operand 156 states and 159 transitions. Second operand has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 71 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:14,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:35:14,668 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2021-05-03 00:35:14,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-03 00:35:14,669 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 71 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-05-03 00:35:14,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:35:14,670 INFO L225 Difference]: With dead ends: 176 [2021-05-03 00:35:14,670 INFO L226 Difference]: Without dead ends: 165 [2021-05-03 00:35:14,671 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 60 SyntacticMatches, 24 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5175 ImplicationChecksByTransitivity, 6357.1ms TimeCoverageRelationStatistics Valid=774, Invalid=18966, Unknown=0, NotChecked=0, Total=19740 [2021-05-03 00:35:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-03 00:35:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 158. [2021-05-03 00:35:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 154 states have (on average 1.025974025974026) internal successors, (158), 154 states have internal predecessors, (158), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 161 transitions. [2021-05-03 00:35:14,779 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 161 transitions. Word has length 153 [2021-05-03 00:35:14,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:35:14,779 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 161 transitions. [2021-05-03 00:35:14,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 71 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:14,779 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 161 transitions. [2021-05-03 00:35:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-05-03 00:35:14,779 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:35:14,779 INFO L523 BasicCegarLoop]: trace histogram [54, 54, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:35:14,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-03 00:35:14,780 INFO L428 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:35:14,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:35:14,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1733141550, now seen corresponding path program 64 times [2021-05-03 00:35:14,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:35:14,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347308200] [2021-05-03 00:35:14,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:35:15,610 WARN L205 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 157 [2021-05-03 00:35:15,700 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_717 5) (<= 6 v_main_~c~0_2747)) InVars {main_~b~0=v_main_~b~0_717, main_~c~0=v_main_~c~0_2747} OutVars{main_~b~0=v_main_~b~0_717, main_~c~0=v_main_~c~0_2747} AuxVars[] AssignedVars[] [2021-05-03 00:35:15,702 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:35:15,702 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:15,704 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:35:15,725 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:35:15,744 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:15,744 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:15,751 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:35:15,757 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:35:15,765 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_717 5) (<= 6 v_main_~c~0_2747)) InVars {main_~b~0=v_main_~b~0_717, main_~c~0=v_main_~c~0_2747} OutVars{main_~b~0=v_main_~b~0_717, main_~c~0=v_main_~c~0_2747} AuxVars[] AssignedVars[] [2021-05-03 00:35:15,766 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:35:15,780 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:15,783 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:35:15,793 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:35:15,812 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:15,813 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:15,820 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:35:15,826 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:35:15,843 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:15,844 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:15,868 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:35:15,883 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:35:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:35:15,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:35:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:35:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:35:19,003 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:35:19,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347308200] [2021-05-03 00:35:19,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [347308200] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:35:19,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:35:19,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2021-05-03 00:35:19,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672346235] [2021-05-03 00:35:19,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-03 00:35:19,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:35:19,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-03 00:35:19,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4993, Unknown=0, NotChecked=0, Total=5256 [2021-05-03 00:35:19,004 INFO L87 Difference]: Start difference. First operand 158 states and 161 transitions. Second operand has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:25,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:35:25,830 INFO L93 Difference]: Finished difference Result 178 states and 188 transitions. [2021-05-03 00:35:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-03 00:35:25,831 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 156 [2021-05-03 00:35:25,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:35:25,832 INFO L225 Difference]: With dead ends: 178 [2021-05-03 00:35:25,832 INFO L226 Difference]: Without dead ends: 167 [2021-05-03 00:35:25,833 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 61 SyntacticMatches, 25 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5426 ImplicationChecksByTransitivity, 6706.2ms TimeCoverageRelationStatistics Valid=783, Invalid=19523, Unknown=0, NotChecked=0, Total=20306 [2021-05-03 00:35:25,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-03 00:35:25,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 159. [2021-05-03 00:35:25,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.0258064516129033) internal successors, (159), 155 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2021-05-03 00:35:25,931 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 156 [2021-05-03 00:35:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:35:25,931 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2021-05-03 00:35:25,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2021-05-03 00:35:25,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-05-03 00:35:25,931 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:35:25,931 INFO L523 BasicCegarLoop]: trace histogram [55, 55, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:35:25,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-03 00:35:25,932 INFO L428 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:35:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:35:25,932 INFO L82 PathProgramCache]: Analyzing trace with hash -964458868, now seen corresponding path program 65 times [2021-05-03 00:35:25,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:35:25,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808480540] [2021-05-03 00:35:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:35:26,706 WARN L205 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:35:26,802 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2813) (< v_main_~b~0_737 5)) InVars {main_~b~0=v_main_~b~0_737, main_~c~0=v_main_~c~0_2813} OutVars{main_~b~0=v_main_~b~0_737, main_~c~0=v_main_~c~0_2813} AuxVars[] AssignedVars[] [2021-05-03 00:35:26,804 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:35:26,818 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:26,820 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:35:26,829 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:35:26,848 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:26,849 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:26,858 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:35:26,868 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:35:26,873 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_2813) (< v_main_~b~0_737 5)) InVars {main_~b~0=v_main_~b~0_737, main_~c~0=v_main_~c~0_2813} OutVars{main_~b~0=v_main_~b~0_737, main_~c~0=v_main_~c~0_2813} AuxVars[] AssignedVars[] [2021-05-03 00:35:26,874 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:35:26,875 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:26,877 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:35:26,899 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:35:26,918 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:26,919 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:26,927 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:35:26,934 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:35:26,948 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:26,948 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:26,968 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:35:26,980 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:35:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:35:27,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:35:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:35:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:35:30,043 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:35:30,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808480540] [2021-05-03 00:35:30,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1808480540] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:35:30,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:35:30,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2021-05-03 00:35:30,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372472807] [2021-05-03 00:35:30,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-03 00:35:30,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:35:30,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-03 00:35:30,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=5136, Unknown=0, NotChecked=0, Total=5402 [2021-05-03 00:35:30,045 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand has 74 states, 74 states have (on average 2.0945945945945947) internal successors, (155), 73 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:35:36,978 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2021-05-03 00:35:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-03 00:35:36,979 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0945945945945947) internal successors, (155), 73 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 158 [2021-05-03 00:35:36,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:35:36,980 INFO L225 Difference]: With dead ends: 180 [2021-05-03 00:35:36,980 INFO L226 Difference]: Without dead ends: 169 [2021-05-03 00:35:36,981 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 65 SyntacticMatches, 22 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5407 ImplicationChecksByTransitivity, 6687.3ms TimeCoverageRelationStatistics Valid=792, Invalid=20088, Unknown=0, NotChecked=0, Total=20880 [2021-05-03 00:35:36,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-05-03 00:35:37,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2021-05-03 00:35:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.0254777070063694) internal successors, (161), 157 states have internal predecessors, (161), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2021-05-03 00:35:37,080 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 158 [2021-05-03 00:35:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:35:37,080 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 164 transitions. [2021-05-03 00:35:37,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 2.0945945945945947) internal successors, (155), 73 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 164 transitions. [2021-05-03 00:35:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-05-03 00:35:37,081 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:35:37,081 INFO L523 BasicCegarLoop]: trace histogram [56, 56, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:35:37,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-03 00:35:37,081 INFO L428 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:35:37,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:35:37,081 INFO L82 PathProgramCache]: Analyzing trace with hash 801786218, now seen corresponding path program 66 times [2021-05-03 00:35:37,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:35:37,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117100833] [2021-05-03 00:35:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:35:37,982 WARN L205 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 153 [2021-05-03 00:35:38,092 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_757 5) (<= 6 v_main_~c~0_2879)) InVars {main_~b~0=v_main_~b~0_757, main_~c~0=v_main_~c~0_2879} OutVars{main_~b~0=v_main_~b~0_757, main_~c~0=v_main_~c~0_2879} AuxVars[] AssignedVars[] [2021-05-03 00:35:38,093 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:35:38,094 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:38,098 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:35:38,123 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:35:38,146 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:38,147 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:38,159 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:35:38,167 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:35:38,172 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_757 5) (<= 6 v_main_~c~0_2879)) InVars {main_~b~0=v_main_~b~0_757, main_~c~0=v_main_~c~0_2879} OutVars{main_~b~0=v_main_~b~0_757, main_~c~0=v_main_~c~0_2879} AuxVars[] AssignedVars[] [2021-05-03 00:35:38,174 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:35:38,189 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:38,192 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:35:38,203 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:35:38,226 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:38,227 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:38,239 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:35:38,247 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:35:38,266 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:38,267 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:38,293 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:35:38,309 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:35:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:35:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:35:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:35:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:35:41,178 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:35:41,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117100833] [2021-05-03 00:35:41,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1117100833] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:35:41,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:35:41,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2021-05-03 00:35:41,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708118963] [2021-05-03 00:35:41,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-03 00:35:41,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:35:41,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-03 00:35:41,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=5281, Unknown=0, NotChecked=0, Total=5550 [2021-05-03 00:35:41,180 INFO L87 Difference]: Start difference. First operand 161 states and 164 transitions. Second operand has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:48,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:35:48,179 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2021-05-03 00:35:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-03 00:35:48,180 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 160 [2021-05-03 00:35:48,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:35:48,181 INFO L225 Difference]: With dead ends: 182 [2021-05-03 00:35:48,181 INFO L226 Difference]: Without dead ends: 171 [2021-05-03 00:35:48,182 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 76 SyntacticMatches, 12 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5539 ImplicationChecksByTransitivity, 6527.1ms TimeCoverageRelationStatistics Valid=801, Invalid=20661, Unknown=0, NotChecked=0, Total=21462 [2021-05-03 00:35:48,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-03 00:35:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2021-05-03 00:35:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 159 states have (on average 1.0251572327044025) internal successors, (163), 159 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 166 transitions. [2021-05-03 00:35:48,290 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 166 transitions. Word has length 160 [2021-05-03 00:35:48,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:35:48,290 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 166 transitions. [2021-05-03 00:35:48,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 166 transitions. [2021-05-03 00:35:48,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-05-03 00:35:48,291 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:35:48,291 INFO L523 BasicCegarLoop]: trace histogram [57, 57, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:35:48,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-03 00:35:48,291 INFO L428 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:35:48,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:35:48,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1651231944, now seen corresponding path program 67 times [2021-05-03 00:35:48,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:35:48,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355140369] [2021-05-03 00:35:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:35:49,079 WARN L205 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:35:49,169 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_777 5) (<= 6 v_main_~c~0_2945)) InVars {main_~b~0=v_main_~b~0_777, main_~c~0=v_main_~c~0_2945} OutVars{main_~b~0=v_main_~b~0_777, main_~c~0=v_main_~c~0_2945} AuxVars[] AssignedVars[] [2021-05-03 00:35:49,171 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:35:49,183 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:49,186 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:35:49,195 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:35:49,227 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:35:49,228 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:49,229 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:49,238 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:35:49,248 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_777 5) (<= 6 v_main_~c~0_2945)) InVars {main_~b~0=v_main_~b~0_777, main_~c~0=v_main_~c~0_2945} OutVars{main_~b~0=v_main_~b~0_777, main_~c~0=v_main_~c~0_2945} AuxVars[] AssignedVars[] [2021-05-03 00:35:49,249 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:35:49,263 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:49,266 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:35:49,282 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:35:49,301 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:35:49,302 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:49,309 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:49,318 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:35:49,338 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:35:49,339 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:35:49,358 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:35:49,371 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:35:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:35:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:35:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:35:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:35:52,347 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:35:52,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355140369] [2021-05-03 00:35:52,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1355140369] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:35:52,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:35:52,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2021-05-03 00:35:52,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232626208] [2021-05-03 00:35:52,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-03 00:35:52,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:35:52,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-03 00:35:52,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=5428, Unknown=0, NotChecked=0, Total=5700 [2021-05-03 00:35:52,349 INFO L87 Difference]: Start difference. First operand 163 states and 166 transitions. Second operand has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:59,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:35:59,768 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2021-05-03 00:35:59,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-03 00:35:59,769 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 162 [2021-05-03 00:35:59,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:35:59,769 INFO L225 Difference]: With dead ends: 184 [2021-05-03 00:35:59,769 INFO L226 Difference]: Without dead ends: 173 [2021-05-03 00:35:59,771 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 73 SyntacticMatches, 16 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5770 ImplicationChecksByTransitivity, 6821.8ms TimeCoverageRelationStatistics Valid=810, Invalid=21242, Unknown=0, NotChecked=0, Total=22052 [2021-05-03 00:35:59,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-03 00:35:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2021-05-03 00:35:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 161 states have (on average 1.0248447204968945) internal successors, (165), 161 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2021-05-03 00:35:59,871 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 162 [2021-05-03 00:35:59,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:35:59,871 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2021-05-03 00:35:59,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:35:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2021-05-03 00:35:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-05-03 00:35:59,873 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:35:59,873 INFO L523 BasicCegarLoop]: trace histogram [58, 58, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:35:59,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-03 00:35:59,873 INFO L428 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:35:59,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:35:59,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1924788390, now seen corresponding path program 68 times [2021-05-03 00:35:59,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:35:59,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83055530] [2021-05-03 00:35:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:36:00,707 WARN L205 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 157 [2021-05-03 00:36:00,802 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3011) (< v_main_~b~0_797 5)) InVars {main_~b~0=v_main_~b~0_797, main_~c~0=v_main_~c~0_3011} OutVars{main_~b~0=v_main_~b~0_797, main_~c~0=v_main_~c~0_3011} AuxVars[] AssignedVars[] [2021-05-03 00:36:00,803 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:36:00,804 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:00,807 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:36:00,827 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:36:00,846 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:00,847 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:00,856 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:36:00,863 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:36:00,867 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3011) (< v_main_~b~0_797 5)) InVars {main_~b~0=v_main_~b~0_797, main_~c~0=v_main_~c~0_3011} OutVars{main_~b~0=v_main_~b~0_797, main_~c~0=v_main_~c~0_3011} AuxVars[] AssignedVars[] [2021-05-03 00:36:00,868 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:36:00,869 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:00,872 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:36:00,894 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:36:00,913 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:00,914 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:00,923 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:36:00,929 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:36:00,943 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:00,943 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:00,963 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:36:00,976 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:36:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:36:01,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:36:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:36:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:36:04,474 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:36:04,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83055530] [2021-05-03 00:36:04,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [83055530] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:36:04,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:36:04,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2021-05-03 00:36:04,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486739119] [2021-05-03 00:36:04,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-03 00:36:04,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:36:04,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-03 00:36:04,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=5577, Unknown=0, NotChecked=0, Total=5852 [2021-05-03 00:36:04,476 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand has 77 states, 77 states have (on average 2.090909090909091) internal successors, (161), 76 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:12,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:36:12,968 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2021-05-03 00:36:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-03 00:36:12,970 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.090909090909091) internal successors, (161), 76 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 164 [2021-05-03 00:36:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:36:12,970 INFO L225 Difference]: With dead ends: 186 [2021-05-03 00:36:12,970 INFO L226 Difference]: Without dead ends: 175 [2021-05-03 00:36:12,971 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 67 SyntacticMatches, 23 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6046 ImplicationChecksByTransitivity, 7506.1ms TimeCoverageRelationStatistics Valid=819, Invalid=21831, Unknown=0, NotChecked=0, Total=22650 [2021-05-03 00:36:12,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-03 00:36:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 167. [2021-05-03 00:36:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 163 states have (on average 1.0245398773006136) internal successors, (167), 163 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 170 transitions. [2021-05-03 00:36:13,095 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 170 transitions. Word has length 164 [2021-05-03 00:36:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:36:13,095 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 170 transitions. [2021-05-03 00:36:13,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.090909090909091) internal successors, (161), 76 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 170 transitions. [2021-05-03 00:36:13,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-05-03 00:36:13,096 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:36:13,096 INFO L523 BasicCegarLoop]: trace histogram [59, 59, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:36:13,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-03 00:36:13,096 INFO L428 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:36:13,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:36:13,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1475439356, now seen corresponding path program 69 times [2021-05-03 00:36:13,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:36:13,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253962683] [2021-05-03 00:36:13,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:36:13,905 WARN L205 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:36:14,002 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:14,003 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:14,013 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:36:14,022 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_817 5) (<= 6 v_main_~c~0_3079)) InVars {main_~b~0=v_main_~b~0_817, main_~c~0=v_main_~c~0_3079} OutVars{main_~b~0=v_main_~b~0_817, main_~c~0=v_main_~c~0_3079} AuxVars[] AssignedVars[] [2021-05-03 00:36:14,023 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:36:14,037 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:14,039 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:36:14,049 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:36:14,069 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:36:14,072 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:14,072 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:14,081 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:36:14,090 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_817 5) (<= 6 v_main_~c~0_3079)) InVars {main_~b~0=v_main_~b~0_817, main_~c~0=v_main_~c~0_3079} OutVars{main_~b~0=v_main_~b~0_817, main_~c~0=v_main_~c~0_3079} AuxVars[] AssignedVars[] [2021-05-03 00:36:14,092 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:36:14,106 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:14,109 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:36:14,120 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:36:14,140 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:36:14,154 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:14,155 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:14,175 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:36:14,189 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:36:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:36:14,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:36:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:36:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:36:17,622 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:36:17,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253962683] [2021-05-03 00:36:17,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1253962683] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:36:17,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:36:17,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2021-05-03 00:36:17,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714863142] [2021-05-03 00:36:17,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-03 00:36:17,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:36:17,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-03 00:36:17,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=5728, Unknown=0, NotChecked=0, Total=6006 [2021-05-03 00:36:17,624 INFO L87 Difference]: Start difference. First operand 167 states and 170 transitions. Second operand has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:36:25,725 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2021-05-03 00:36:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-03 00:36:25,726 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 166 [2021-05-03 00:36:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:36:25,727 INFO L225 Difference]: With dead ends: 190 [2021-05-03 00:36:25,727 INFO L226 Difference]: Without dead ends: 179 [2021-05-03 00:36:25,728 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 67 SyntacticMatches, 24 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6200 ImplicationChecksByTransitivity, 7632.4ms TimeCoverageRelationStatistics Valid=828, Invalid=22428, Unknown=0, NotChecked=0, Total=23256 [2021-05-03 00:36:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-03 00:36:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 171. [2021-05-03 00:36:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 167 states have (on average 1.0239520958083832) internal successors, (171), 167 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2021-05-03 00:36:25,833 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 166 [2021-05-03 00:36:25,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:36:25,834 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions. [2021-05-03 00:36:25,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions. [2021-05-03 00:36:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-05-03 00:36:25,835 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:36:25,835 INFO L523 BasicCegarLoop]: trace histogram [60, 60, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:36:25,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-03 00:36:25,835 INFO L428 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:36:25,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:36:25,835 INFO L82 PathProgramCache]: Analyzing trace with hash -624191006, now seen corresponding path program 70 times [2021-05-03 00:36:25,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:36:25,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245958277] [2021-05-03 00:36:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:36:26,664 WARN L205 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:36:26,763 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_837 5) (<= 6 v_main_~c~0_3143)) InVars {main_~b~0=v_main_~b~0_837, main_~c~0=v_main_~c~0_3143} OutVars{main_~b~0=v_main_~b~0_837, main_~c~0=v_main_~c~0_3143} AuxVars[] AssignedVars[] [2021-05-03 00:36:26,764 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:36:26,765 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:26,768 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:36:26,789 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:36:26,809 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:36:26,813 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_837 5) (<= 6 v_main_~c~0_3143)) InVars {main_~b~0=v_main_~b~0_837, main_~c~0=v_main_~c~0_3143} OutVars{main_~b~0=v_main_~b~0_837, main_~c~0=v_main_~c~0_3143} AuxVars[] AssignedVars[] [2021-05-03 00:36:26,814 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:36:26,815 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:26,818 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:36:26,840 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:36:26,859 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:36:26,873 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:26,874 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:26,895 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:36:26,908 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:36:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:36:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:36:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:36:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:36:30,420 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:36:30,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245958277] [2021-05-03 00:36:30,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1245958277] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:36:30,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:36:30,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2021-05-03 00:36:30,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129445576] [2021-05-03 00:36:30,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-03 00:36:30,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:36:30,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-03 00:36:30,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=5881, Unknown=0, NotChecked=0, Total=6162 [2021-05-03 00:36:30,422 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:38,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:36:38,993 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2021-05-03 00:36:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-03 00:36:38,994 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 168 [2021-05-03 00:36:38,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:36:38,995 INFO L225 Difference]: With dead ends: 191 [2021-05-03 00:36:38,995 INFO L226 Difference]: Without dead ends: 180 [2021-05-03 00:36:38,997 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 70 SyntacticMatches, 22 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6325 ImplicationChecksByTransitivity, 7927.0ms TimeCoverageRelationStatistics Valid=837, Invalid=23033, Unknown=0, NotChecked=0, Total=23870 [2021-05-03 00:36:38,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-05-03 00:36:39,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 173. [2021-05-03 00:36:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 169 states have (on average 1.0236686390532543) internal successors, (173), 169 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 176 transitions. [2021-05-03 00:36:39,106 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 176 transitions. Word has length 168 [2021-05-03 00:36:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:36:39,106 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 176 transitions. [2021-05-03 00:36:39,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 176 transitions. [2021-05-03 00:36:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-03 00:36:39,107 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:36:39,107 INFO L523 BasicCegarLoop]: trace histogram [60, 60, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:36:39,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-03 00:36:39,107 INFO L428 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:36:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:36:39,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1803606699, now seen corresponding path program 71 times [2021-05-03 00:36:39,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:36:39,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791928837] [2021-05-03 00:36:39,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:36:39,958 WARN L205 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:36:40,073 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_857 5) (<= 6 v_main_~c~0_3203)) InVars {main_~b~0=v_main_~b~0_857, main_~c~0=v_main_~c~0_3203} OutVars{main_~b~0=v_main_~b~0_857, main_~c~0=v_main_~c~0_3203} AuxVars[] AssignedVars[] [2021-05-03 00:36:40,075 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:36:40,075 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:40,078 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:36:40,101 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:36:40,123 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:40,124 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:40,133 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:36:40,140 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:36:40,145 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_857 5) (<= 6 v_main_~c~0_3203)) InVars {main_~b~0=v_main_~b~0_857, main_~c~0=v_main_~c~0_3203} OutVars{main_~b~0=v_main_~b~0_857, main_~c~0=v_main_~c~0_3203} AuxVars[] AssignedVars[] [2021-05-03 00:36:40,147 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:36:40,148 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:40,151 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:36:40,177 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:36:40,200 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:40,201 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:40,209 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:36:40,216 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:36:40,234 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:40,235 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:40,260 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:36:40,275 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:36:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:36:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:36:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:36:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:36:44,179 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:36:44,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791928837] [2021-05-03 00:36:44,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [791928837] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:36:44,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:36:44,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2021-05-03 00:36:44,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446330312] [2021-05-03 00:36:44,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-03 00:36:44,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:36:44,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-03 00:36:44,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=6036, Unknown=0, NotChecked=0, Total=6320 [2021-05-03 00:36:44,180 INFO L87 Difference]: Start difference. First operand 173 states and 176 transitions. Second operand has 80 states, 80 states have (on average 2.1) internal successors, (168), 79 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:53,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:36:53,201 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2021-05-03 00:36:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-03 00:36:53,202 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.1) internal successors, (168), 79 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2021-05-03 00:36:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:36:53,202 INFO L225 Difference]: With dead ends: 193 [2021-05-03 00:36:53,202 INFO L226 Difference]: Without dead ends: 182 [2021-05-03 00:36:53,203 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 69 SyntacticMatches, 25 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6664 ImplicationChecksByTransitivity, 8604.2ms TimeCoverageRelationStatistics Valid=846, Invalid=23646, Unknown=0, NotChecked=0, Total=24492 [2021-05-03 00:36:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-03 00:36:53,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2021-05-03 00:36:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 170 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2021-05-03 00:36:53,323 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 171 [2021-05-03 00:36:53,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:36:53,323 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 177 transitions. [2021-05-03 00:36:53,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.1) internal successors, (168), 79 states have internal predecessors, (168), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:36:53,323 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 177 transitions. [2021-05-03 00:36:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-03 00:36:53,323 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:36:53,324 INFO L523 BasicCegarLoop]: trace histogram [61, 61, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:36:53,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-03 00:36:53,324 INFO L428 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:36:53,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:36:53,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1966927415, now seen corresponding path program 72 times [2021-05-03 00:36:53,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:36:53,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037949942] [2021-05-03 00:36:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:36:54,192 WARN L205 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 156 [2021-05-03 00:36:54,301 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_877 5) (<= 6 v_main_~c~0_3272)) InVars {main_~b~0=v_main_~b~0_877, main_~c~0=v_main_~c~0_3272} OutVars{main_~b~0=v_main_~b~0_877, main_~c~0=v_main_~c~0_3272} AuxVars[] AssignedVars[] [2021-05-03 00:36:54,302 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:36:54,318 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:54,321 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:36:54,332 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:36:54,355 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:54,355 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:54,366 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:36:54,375 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:36:54,380 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_877 5) (<= 6 v_main_~c~0_3272)) InVars {main_~b~0=v_main_~b~0_877, main_~c~0=v_main_~c~0_3272} OutVars{main_~b~0=v_main_~b~0_877, main_~c~0=v_main_~c~0_3272} AuxVars[] AssignedVars[] [2021-05-03 00:36:54,381 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:36:54,382 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:54,385 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:36:54,411 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:36:54,434 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:54,435 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:54,446 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:36:54,455 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:36:54,477 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:36:54,478 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:36:54,503 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:36:54,522 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:36:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:36:54,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:36:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:36:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:36:59,091 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:36:59,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037949942] [2021-05-03 00:36:59,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1037949942] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:36:59,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:36:59,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2021-05-03 00:36:59,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840844276] [2021-05-03 00:36:59,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-03 00:36:59,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:36:59,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-03 00:36:59,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=6193, Unknown=0, NotChecked=0, Total=6480 [2021-05-03 00:36:59,093 INFO L87 Difference]: Start difference. First operand 174 states and 177 transitions. Second operand has 81 states, 81 states have (on average 2.0987654320987654) internal successors, (170), 80 states have internal predecessors, (170), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:37:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:37:09,061 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2021-05-03 00:37:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-03 00:37:09,062 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0987654320987654) internal successors, (170), 80 states have internal predecessors, (170), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-05-03 00:37:09,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:37:09,063 INFO L225 Difference]: With dead ends: 195 [2021-05-03 00:37:09,063 INFO L226 Difference]: Without dead ends: 184 [2021-05-03 00:37:09,064 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 70 SyntacticMatches, 25 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6710 ImplicationChecksByTransitivity, 9516.7ms TimeCoverageRelationStatistics Valid=855, Invalid=24267, Unknown=0, NotChecked=0, Total=25122 [2021-05-03 00:37:09,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-05-03 00:37:09,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 176. [2021-05-03 00:37:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.0232558139534884) internal successors, (176), 172 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:37:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 179 transitions. [2021-05-03 00:37:09,177 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 179 transitions. Word has length 173 [2021-05-03 00:37:09,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:37:09,177 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 179 transitions. [2021-05-03 00:37:09,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0987654320987654) internal successors, (170), 80 states have internal predecessors, (170), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:37:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 179 transitions. [2021-05-03 00:37:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-03 00:37:09,178 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:37:09,178 INFO L523 BasicCegarLoop]: trace histogram [62, 62, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:37:09,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-03 00:37:09,179 INFO L428 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:37:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:37:09,179 INFO L82 PathProgramCache]: Analyzing trace with hash -497813145, now seen corresponding path program 73 times [2021-05-03 00:37:09,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:37:09,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694912050] [2021-05-03 00:37:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:37:10,349 WARN L205 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:37:10,490 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3341) (< v_main_~b~0_897 5)) InVars {main_~b~0=v_main_~b~0_897, main_~c~0=v_main_~c~0_3341} OutVars{main_~b~0=v_main_~b~0_897, main_~c~0=v_main_~c~0_3341} AuxVars[] AssignedVars[] [2021-05-03 00:37:10,492 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:37:10,515 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:10,519 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:37:10,537 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:37:10,566 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:37:10,567 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:10,581 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:37:10,592 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:37:10,599 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3341) (< v_main_~b~0_897 5)) InVars {main_~b~0=v_main_~b~0_897, main_~c~0=v_main_~c~0_3341} OutVars{main_~b~0=v_main_~b~0_897, main_~c~0=v_main_~c~0_3341} AuxVars[] AssignedVars[] [2021-05-03 00:37:10,601 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:37:10,602 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:10,606 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:37:10,640 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:37:10,668 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:37:10,669 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:10,683 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:37:10,693 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:37:10,714 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:37:10,716 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:10,747 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:37:10,766 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:37:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:37:10,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:37:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:37:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:37:15,277 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:37:15,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694912050] [2021-05-03 00:37:15,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1694912050] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:37:15,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:37:15,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2021-05-03 00:37:15,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647258206] [2021-05-03 00:37:15,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-03 00:37:15,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:37:15,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-03 00:37:15,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=6352, Unknown=0, NotChecked=0, Total=6642 [2021-05-03 00:37:15,278 INFO L87 Difference]: Start difference. First operand 176 states and 179 transitions. Second operand has 82 states, 82 states have (on average 2.097560975609756) internal successors, (172), 81 states have internal predecessors, (172), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:37:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:37:25,353 INFO L93 Difference]: Finished difference Result 197 states and 207 transitions. [2021-05-03 00:37:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-03 00:37:25,354 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.097560975609756) internal successors, (172), 81 states have internal predecessors, (172), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2021-05-03 00:37:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:37:25,354 INFO L225 Difference]: With dead ends: 197 [2021-05-03 00:37:25,355 INFO L226 Difference]: Without dead ends: 186 [2021-05-03 00:37:25,356 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 66 SyntacticMatches, 30 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7074 ImplicationChecksByTransitivity, 9665.2ms TimeCoverageRelationStatistics Valid=864, Invalid=24896, Unknown=0, NotChecked=0, Total=25760 [2021-05-03 00:37:25,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-05-03 00:37:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2021-05-03 00:37:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 174 states have (on average 1.0229885057471264) internal successors, (178), 174 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:37:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 181 transitions. [2021-05-03 00:37:25,470 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 181 transitions. Word has length 175 [2021-05-03 00:37:25,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:37:25,471 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 181 transitions. [2021-05-03 00:37:25,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.097560975609756) internal successors, (172), 81 states have internal predecessors, (172), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:37:25,471 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 181 transitions. [2021-05-03 00:37:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-03 00:37:25,471 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:37:25,472 INFO L523 BasicCegarLoop]: trace histogram [63, 63, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:37:25,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-03 00:37:25,472 INFO L428 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:37:25,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:37:25,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1723240059, now seen corresponding path program 74 times [2021-05-03 00:37:25,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:37:25,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189351679] [2021-05-03 00:37:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:37:26,424 WARN L205 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:37:26,540 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3410) (< v_main_~b~0_917 5)) InVars {main_~b~0=v_main_~b~0_917, main_~c~0=v_main_~c~0_3410} OutVars{main_~b~0=v_main_~b~0_917, main_~c~0=v_main_~c~0_3410} AuxVars[] AssignedVars[] [2021-05-03 00:37:26,542 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:37:26,543 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:26,546 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:37:26,573 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:37:26,597 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:37:26,598 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:37:26,599 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:26,611 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:37:26,624 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3410) (< v_main_~b~0_917 5)) InVars {main_~b~0=v_main_~b~0_917, main_~c~0=v_main_~c~0_3410} OutVars{main_~b~0=v_main_~b~0_917, main_~c~0=v_main_~c~0_3410} AuxVars[] AssignedVars[] [2021-05-03 00:37:26,625 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:37:26,626 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:26,629 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:37:26,656 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:37:26,680 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:37:26,681 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:37:26,682 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:26,693 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:37:26,716 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:37:26,717 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:26,742 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:37:26,757 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:37:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:37:26,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:37:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:37:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:37:31,379 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:37:31,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189351679] [2021-05-03 00:37:31,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [189351679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:37:31,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:37:31,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2021-05-03 00:37:31,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907761110] [2021-05-03 00:37:31,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-03 00:37:31,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:37:31,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-03 00:37:31,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=6513, Unknown=0, NotChecked=0, Total=6806 [2021-05-03 00:37:31,381 INFO L87 Difference]: Start difference. First operand 178 states and 181 transitions. Second operand has 83 states, 83 states have (on average 2.0963855421686746) internal successors, (174), 82 states have internal predecessors, (174), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:37:42,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:37:42,085 INFO L93 Difference]: Finished difference Result 199 states and 209 transitions. [2021-05-03 00:37:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-03 00:37:42,086 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0963855421686746) internal successors, (174), 82 states have internal predecessors, (174), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2021-05-03 00:37:42,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:37:42,087 INFO L225 Difference]: With dead ends: 199 [2021-05-03 00:37:42,087 INFO L226 Difference]: Without dead ends: 188 [2021-05-03 00:37:42,089 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 70 SyntacticMatches, 27 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7166 ImplicationChecksByTransitivity, 10086.6ms TimeCoverageRelationStatistics Valid=873, Invalid=25533, Unknown=0, NotChecked=0, Total=26406 [2021-05-03 00:37:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-05-03 00:37:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 180. [2021-05-03 00:37:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 176 states have (on average 1.0227272727272727) internal successors, (180), 176 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:37:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 183 transitions. [2021-05-03 00:37:42,217 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 183 transitions. Word has length 177 [2021-05-03 00:37:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:37:42,217 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 183 transitions. [2021-05-03 00:37:42,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0963855421686746) internal successors, (174), 82 states have internal predecessors, (174), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:37:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 183 transitions. [2021-05-03 00:37:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-03 00:37:42,218 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:37:42,218 INFO L523 BasicCegarLoop]: trace histogram [64, 64, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:37:42,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-03 00:37:42,219 INFO L428 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:37:42,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:37:42,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1757501987, now seen corresponding path program 75 times [2021-05-03 00:37:42,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:37:42,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547640426] [2021-05-03 00:37:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:37:43,214 WARN L205 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:37:43,334 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3479) (< v_main_~b~0_937 5)) InVars {main_~b~0=v_main_~b~0_937, main_~c~0=v_main_~c~0_3479} OutVars{main_~b~0=v_main_~b~0_937, main_~c~0=v_main_~c~0_3479} AuxVars[] AssignedVars[] [2021-05-03 00:37:43,336 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:37:43,354 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:43,358 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:37:43,372 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:37:43,397 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:37:43,398 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:43,410 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:37:43,419 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:37:43,435 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3479) (< v_main_~b~0_937 5)) InVars {main_~b~0=v_main_~b~0_937, main_~c~0=v_main_~c~0_3479} OutVars{main_~b~0=v_main_~b~0_937, main_~c~0=v_main_~c~0_3479} AuxVars[] AssignedVars[] [2021-05-03 00:37:43,436 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:37:43,437 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:43,441 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:37:43,469 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:37:43,494 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:37:43,495 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:43,506 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:37:43,515 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:37:43,533 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:37:43,534 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:37:43,560 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:37:43,577 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:37:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:37:43,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:37:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:37:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:37:48,861 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:37:48,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547640426] [2021-05-03 00:37:48,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [547640426] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:37:48,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:37:48,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2021-05-03 00:37:48,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32706679] [2021-05-03 00:37:48,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-03 00:37:48,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:37:48,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-03 00:37:48,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=6676, Unknown=0, NotChecked=0, Total=6972 [2021-05-03 00:37:48,863 INFO L87 Difference]: Start difference. First operand 180 states and 183 transitions. Second operand has 84 states, 84 states have (on average 2.0952380952380953) internal successors, (176), 83 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:38:02,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:38:02,936 INFO L93 Difference]: Finished difference Result 201 states and 211 transitions. [2021-05-03 00:38:02,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-03 00:38:02,937 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0952380952380953) internal successors, (176), 83 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-05-03 00:38:02,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:38:02,938 INFO L225 Difference]: With dead ends: 201 [2021-05-03 00:38:02,938 INFO L226 Difference]: Without dead ends: 190 [2021-05-03 00:38:02,940 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 68 SyntacticMatches, 30 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7377 ImplicationChecksByTransitivity, 11376.6ms TimeCoverageRelationStatistics Valid=882, Invalid=26178, Unknown=0, NotChecked=0, Total=27060 [2021-05-03 00:38:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-03 00:38:03,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2021-05-03 00:38:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 178 states have (on average 1.0224719101123596) internal successors, (182), 178 states have internal predecessors, (182), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:38:03,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 185 transitions. [2021-05-03 00:38:03,071 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 185 transitions. Word has length 179 [2021-05-03 00:38:03,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:38:03,071 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 185 transitions. [2021-05-03 00:38:03,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0952380952380953) internal successors, (176), 83 states have internal predecessors, (176), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:38:03,072 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 185 transitions. [2021-05-03 00:38:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-03 00:38:03,072 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:38:03,072 INFO L523 BasicCegarLoop]: trace histogram [65, 65, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:38:03,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-03 00:38:03,073 INFO L428 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:38:03,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:38:03,073 INFO L82 PathProgramCache]: Analyzing trace with hash 971084609, now seen corresponding path program 76 times [2021-05-03 00:38:03,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:38:03,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233540863] [2021-05-03 00:38:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:38:04,088 WARN L205 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 156 [2021-05-03 00:38:04,219 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:38:04,220 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:04,233 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:38:04,245 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_957 5) (<= 6 v_main_~c~0_3550)) InVars {main_~b~0=v_main_~b~0_957, main_~c~0=v_main_~c~0_3550} OutVars{main_~b~0=v_main_~b~0_957, main_~c~0=v_main_~c~0_3550} AuxVars[] AssignedVars[] [2021-05-03 00:38:04,246 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:38:04,247 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:04,249 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:38:04,279 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:38:04,303 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:38:04,307 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:38:04,308 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:04,319 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:38:04,331 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_957 5) (<= 6 v_main_~c~0_3550)) InVars {main_~b~0=v_main_~b~0_957, main_~c~0=v_main_~c~0_3550} OutVars{main_~b~0=v_main_~b~0_957, main_~c~0=v_main_~c~0_3550} AuxVars[] AssignedVars[] [2021-05-03 00:38:04,332 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:38:04,333 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:04,336 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:38:04,366 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:38:04,396 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:38:04,413 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:38:04,414 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:04,451 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:38:04,469 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:38:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:38:04,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:38:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:38:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:38:09,989 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:38:09,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233540863] [2021-05-03 00:38:09,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1233540863] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:38:09,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:38:09,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2021-05-03 00:38:09,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126784950] [2021-05-03 00:38:09,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-03 00:38:09,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:38:09,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-03 00:38:09,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=6841, Unknown=0, NotChecked=0, Total=7140 [2021-05-03 00:38:09,991 INFO L87 Difference]: Start difference. First operand 182 states and 185 transitions. Second operand has 85 states, 85 states have (on average 2.0941176470588236) internal successors, (178), 84 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:38:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:38:23,809 INFO L93 Difference]: Finished difference Result 205 states and 216 transitions. [2021-05-03 00:38:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-03 00:38:23,810 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0941176470588236) internal successors, (178), 84 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-03 00:38:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:38:23,811 INFO L225 Difference]: With dead ends: 205 [2021-05-03 00:38:23,811 INFO L226 Difference]: Without dead ends: 194 [2021-05-03 00:38:23,813 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 69 SyntacticMatches, 30 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7434 ImplicationChecksByTransitivity, 11684.3ms TimeCoverageRelationStatistics Valid=891, Invalid=26831, Unknown=0, NotChecked=0, Total=27722 [2021-05-03 00:38:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-05-03 00:38:23,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 186. [2021-05-03 00:38:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.021978021978022) internal successors, (186), 182 states have internal predecessors, (186), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:38:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 189 transitions. [2021-05-03 00:38:23,941 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 189 transitions. Word has length 181 [2021-05-03 00:38:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:38:23,941 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 189 transitions. [2021-05-03 00:38:23,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0941176470588236) internal successors, (178), 84 states have internal predecessors, (178), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:38:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 189 transitions. [2021-05-03 00:38:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-03 00:38:23,942 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:38:23,942 INFO L523 BasicCegarLoop]: trace histogram [66, 66, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:38:23,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-03 00:38:23,943 INFO L428 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:38:23,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:38:23,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1138228447, now seen corresponding path program 77 times [2021-05-03 00:38:23,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:38:23,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622031901] [2021-05-03 00:38:23,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:38:24,994 WARN L205 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 157 [2021-05-03 00:38:25,125 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3617) (< v_main_~b~0_977 5)) InVars {main_~b~0=v_main_~b~0_977, main_~c~0=v_main_~c~0_3617} OutVars{main_~b~0=v_main_~b~0_977, main_~c~0=v_main_~c~0_3617} AuxVars[] AssignedVars[] [2021-05-03 00:38:25,127 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:38:25,128 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:25,132 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:38:25,189 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:38:25,226 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:38:25,235 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3617) (< v_main_~b~0_977 5)) InVars {main_~b~0=v_main_~b~0_977, main_~c~0=v_main_~c~0_3617} OutVars{main_~b~0=v_main_~b~0_977, main_~c~0=v_main_~c~0_3617} AuxVars[] AssignedVars[] [2021-05-03 00:38:25,237 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:38:25,267 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:25,272 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:38:25,291 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:38:25,329 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:38:25,348 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:38:25,349 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:25,378 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:38:25,396 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:38:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:38:25,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:38:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:38:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:38:31,388 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:38:31,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622031901] [2021-05-03 00:38:31,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [622031901] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:38:31,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:38:31,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2021-05-03 00:38:31,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52621928] [2021-05-03 00:38:31,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-03 00:38:31,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:38:31,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-03 00:38:31,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=7008, Unknown=0, NotChecked=0, Total=7310 [2021-05-03 00:38:31,390 INFO L87 Difference]: Start difference. First operand 186 states and 189 transitions. Second operand has 86 states, 86 states have (on average 2.0930232558139537) internal successors, (180), 85 states have internal predecessors, (180), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:38:47,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:38:47,591 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2021-05-03 00:38:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-03 00:38:47,593 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.0930232558139537) internal successors, (180), 85 states have internal predecessors, (180), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183 [2021-05-03 00:38:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:38:47,594 INFO L225 Difference]: With dead ends: 206 [2021-05-03 00:38:47,594 INFO L226 Difference]: Without dead ends: 195 [2021-05-03 00:38:47,595 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 72 SyntacticMatches, 28 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7663 ImplicationChecksByTransitivity, 12865.6ms TimeCoverageRelationStatistics Valid=900, Invalid=27492, Unknown=0, NotChecked=0, Total=28392 [2021-05-03 00:38:47,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-05-03 00:38:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 188. [2021-05-03 00:38:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 184 states have (on average 1.0217391304347827) internal successors, (188), 184 states have internal predecessors, (188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:38:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 191 transitions. [2021-05-03 00:38:47,737 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 191 transitions. Word has length 183 [2021-05-03 00:38:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:38:47,737 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 191 transitions. [2021-05-03 00:38:47,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 2.0930232558139537) internal successors, (180), 85 states have internal predecessors, (180), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:38:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 191 transitions. [2021-05-03 00:38:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-05-03 00:38:47,738 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:38:47,738 INFO L523 BasicCegarLoop]: trace histogram [66, 66, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:38:47,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-03 00:38:47,738 INFO L428 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:38:47,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:38:47,738 INFO L82 PathProgramCache]: Analyzing trace with hash 66337422, now seen corresponding path program 78 times [2021-05-03 00:38:47,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:38:47,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905168144] [2021-05-03 00:38:47,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:38:48,846 WARN L205 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:38:49,020 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2021-05-03 00:38:49,043 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_997 5) (<= 6 v_main_~c~0_3680)) InVars {main_~b~0=v_main_~b~0_997, main_~c~0=v_main_~c~0_3680} OutVars{main_~b~0=v_main_~b~0_997, main_~c~0=v_main_~c~0_3680} AuxVars[] AssignedVars[] [2021-05-03 00:38:49,046 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:38:49,048 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:49,053 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:38:49,115 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:38:49,159 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:38:49,161 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:49,176 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:38:49,188 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:38:49,198 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_997 5) (<= 6 v_main_~c~0_3680)) InVars {main_~b~0=v_main_~b~0_997, main_~c~0=v_main_~c~0_3680} OutVars{main_~b~0=v_main_~b~0_997, main_~c~0=v_main_~c~0_3680} AuxVars[] AssignedVars[] [2021-05-03 00:38:49,201 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:38:49,233 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:49,238 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:38:49,262 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:38:49,304 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:38:49,305 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:49,320 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:38:49,332 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:38:49,359 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:38:49,361 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:38:49,405 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:38:49,433 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:38:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:38:49,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:38:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:38:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:38:55,718 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:38:55,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905168144] [2021-05-03 00:38:55,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1905168144] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:38:55,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:38:55,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2021-05-03 00:38:55,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732284976] [2021-05-03 00:38:55,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-03 00:38:55,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:38:55,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-03 00:38:55,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=7177, Unknown=0, NotChecked=0, Total=7482 [2021-05-03 00:38:55,719 INFO L87 Difference]: Start difference. First operand 188 states and 191 transitions. Second operand has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:39:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:39:10,285 INFO L93 Difference]: Finished difference Result 208 states and 218 transitions. [2021-05-03 00:39:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-03 00:39:10,286 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 186 [2021-05-03 00:39:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:39:10,287 INFO L225 Difference]: With dead ends: 208 [2021-05-03 00:39:10,287 INFO L226 Difference]: Without dead ends: 197 [2021-05-03 00:39:10,289 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 80 SyntacticMatches, 22 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7768 ImplicationChecksByTransitivity, 13666.1ms TimeCoverageRelationStatistics Valid=909, Invalid=28161, Unknown=0, NotChecked=0, Total=29070 [2021-05-03 00:39:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-03 00:39:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 189. [2021-05-03 00:39:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 185 states have (on average 1.0216216216216216) internal successors, (189), 185 states have internal predecessors, (189), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:39:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 192 transitions. [2021-05-03 00:39:10,430 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 192 transitions. Word has length 186 [2021-05-03 00:39:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:39:10,430 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 192 transitions. [2021-05-03 00:39:10,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:39:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 192 transitions. [2021-05-03 00:39:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-05-03 00:39:10,431 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:39:10,431 INFO L523 BasicCegarLoop]: trace histogram [67, 67, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:39:10,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-03 00:39:10,432 INFO L428 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:39:10,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:39:10,432 INFO L82 PathProgramCache]: Analyzing trace with hash -740424468, now seen corresponding path program 79 times [2021-05-03 00:39:10,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:39:10,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546794343] [2021-05-03 00:39:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:39:11,502 WARN L205 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 156 [2021-05-03 00:39:11,644 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_1017 5) (<= 6 v_main_~c~0_3752)) InVars {main_~b~0=v_main_~b~0_1017, main_~c~0=v_main_~c~0_3752} OutVars{main_~b~0=v_main_~b~0_1017, main_~c~0=v_main_~c~0_3752} AuxVars[] AssignedVars[] [2021-05-03 00:39:11,645 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:39:11,647 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:11,651 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:39:11,683 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:39:11,712 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:39:11,713 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:11,725 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:39:11,738 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_3756 6) InVars {main_~c~0=v_main_~c~0_3756} OutVars{main_~c~0=v_main_~c~0_3756} AuxVars[] AssignedVars[] [2021-05-03 00:39:11,740 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:39:11,759 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:11,769 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:39:11,785 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:39:11,814 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~b~0_1017 5) (<= 6 v_main_~c~0_3752)) InVars {main_~b~0=v_main_~b~0_1017, main_~c~0=v_main_~c~0_3752} OutVars{main_~b~0=v_main_~b~0_1017, main_~c~0=v_main_~c~0_3752} AuxVars[] AssignedVars[] [2021-05-03 00:39:11,816 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:39:11,817 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:11,821 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:39:11,853 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:39:11,882 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:39:11,896 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:11,910 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:39:11,923 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_3756 6) InVars {main_~c~0=v_main_~c~0_3756} OutVars{main_~c~0=v_main_~c~0_3756} AuxVars[] AssignedVars[] [2021-05-03 00:39:11,925 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:39:11,926 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:11,934 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:39:11,966 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:39:12,008 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:39:12,009 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:12,042 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:39:12,061 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:39:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:39:12,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:39:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:39:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:39:18,772 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:39:18,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546794343] [2021-05-03 00:39:18,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1546794343] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:39:18,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:39:18,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2021-05-03 00:39:18,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115829186] [2021-05-03 00:39:18,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-03 00:39:18,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:39:18,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-03 00:39:18,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=7348, Unknown=0, NotChecked=0, Total=7656 [2021-05-03 00:39:18,774 INFO L87 Difference]: Start difference. First operand 189 states and 192 transitions. Second operand has 88 states, 88 states have (on average 2.102272727272727) internal successors, (185), 87 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:39:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:39:34,102 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2021-05-03 00:39:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-03 00:39:34,103 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.102272727272727) internal successors, (185), 87 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 188 [2021-05-03 00:39:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:39:34,104 INFO L225 Difference]: With dead ends: 210 [2021-05-03 00:39:34,104 INFO L226 Difference]: Without dead ends: 199 [2021-05-03 00:39:34,106 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 76 SyntacticMatches, 27 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8092 ImplicationChecksByTransitivity, 14513.2ms TimeCoverageRelationStatistics Valid=918, Invalid=28838, Unknown=0, NotChecked=0, Total=29756 [2021-05-03 00:39:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-03 00:39:34,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 191. [2021-05-03 00:39:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 1.0213903743315509) internal successors, (191), 187 states have internal predecessors, (191), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:39:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 194 transitions. [2021-05-03 00:39:34,256 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 194 transitions. Word has length 188 [2021-05-03 00:39:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:39:34,256 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 194 transitions. [2021-05-03 00:39:34,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.102272727272727) internal successors, (185), 87 states have internal predecessors, (185), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:39:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 194 transitions. [2021-05-03 00:39:34,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-05-03 00:39:34,257 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:39:34,257 INFO L523 BasicCegarLoop]: trace histogram [68, 68, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:39:34,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-03 00:39:34,258 INFO L428 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:39:34,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:39:34,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1350479818, now seen corresponding path program 80 times [2021-05-03 00:39:34,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:39:34,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220278331] [2021-05-03 00:39:34,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:39:35,758 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 205 DAG size of output: 156 [2021-05-03 00:39:35,918 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3824) (< v_main_~b~0_1037 5)) InVars {main_~b~0=v_main_~b~0_1037, main_~c~0=v_main_~c~0_3824} OutVars{main_~b~0=v_main_~b~0_1037, main_~c~0=v_main_~c~0_3824} AuxVars[] AssignedVars[] [2021-05-03 00:39:35,919 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:39:35,921 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:35,926 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:39:35,963 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:39:35,994 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:39:35,996 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:36,011 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:39:36,022 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:39:36,030 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3824) (< v_main_~b~0_1037 5)) InVars {main_~b~0=v_main_~b~0_1037, main_~c~0=v_main_~c~0_3824} OutVars{main_~b~0=v_main_~b~0_1037, main_~c~0=v_main_~c~0_3824} AuxVars[] AssignedVars[] [2021-05-03 00:39:36,032 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:39:36,058 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:36,063 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:39:36,092 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:39:36,123 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:39:36,124 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:36,140 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:39:36,151 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:39:36,173 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:39:36,175 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:39:36,210 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:39:36,236 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:39:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:39:36,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:39:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:39:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:39:43,742 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:39:43,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220278331] [2021-05-03 00:39:43,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [220278331] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:39:43,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:39:43,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2021-05-03 00:39:43,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002280270] [2021-05-03 00:39:43,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-03 00:39:43,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:39:43,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-03 00:39:43,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=7521, Unknown=0, NotChecked=0, Total=7832 [2021-05-03 00:39:43,744 INFO L87 Difference]: Start difference. First operand 191 states and 194 transitions. Second operand has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 88 states have internal predecessors, (187), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:40:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:40:00,490 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2021-05-03 00:40:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-03 00:40:00,492 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 88 states have internal predecessors, (187), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 190 [2021-05-03 00:40:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:40:00,492 INFO L225 Difference]: With dead ends: 212 [2021-05-03 00:40:00,493 INFO L226 Difference]: Without dead ends: 201 [2021-05-03 00:40:00,495 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 73 SyntacticMatches, 31 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8234 ImplicationChecksByTransitivity, 15697.2ms TimeCoverageRelationStatistics Valid=927, Invalid=29523, Unknown=0, NotChecked=0, Total=30450 [2021-05-03 00:40:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-05-03 00:40:00,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 193. [2021-05-03 00:40:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 189 states have (on average 1.0211640211640212) internal successors, (193), 189 states have internal predecessors, (193), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:40:00,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2021-05-03 00:40:00,649 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 190 [2021-05-03 00:40:00,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:40:00,649 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2021-05-03 00:40:00,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.101123595505618) internal successors, (187), 88 states have internal predecessors, (187), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:40:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2021-05-03 00:40:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-05-03 00:40:00,651 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:40:00,651 INFO L523 BasicCegarLoop]: trace histogram [69, 69, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:40:00,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-03 00:40:00,652 INFO L428 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:40:00,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:40:00,652 INFO L82 PathProgramCache]: Analyzing trace with hash 664804136, now seen corresponding path program 81 times [2021-05-03 00:40:00,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:40:00,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503869712] [2021-05-03 00:40:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:40:01,724 WARN L205 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:40:01,887 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3896) (< v_main_~b~0_1057 5)) InVars {main_~b~0=v_main_~b~0_1057, main_~c~0=v_main_~c~0_3896} OutVars{main_~b~0=v_main_~b~0_1057, main_~c~0=v_main_~c~0_3896} AuxVars[] AssignedVars[] [2021-05-03 00:40:01,889 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:40:01,890 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:01,894 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:40:01,925 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:40:01,957 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:40:01,959 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:40:01,960 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:01,977 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:40:01,996 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3896) (< v_main_~b~0_1057 5)) InVars {main_~b~0=v_main_~b~0_1057, main_~c~0=v_main_~c~0_3896} OutVars{main_~b~0=v_main_~b~0_1057, main_~c~0=v_main_~c~0_3896} AuxVars[] AssignedVars[] [2021-05-03 00:40:01,998 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:40:01,999 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:02,003 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:40:02,046 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:40:02,089 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:40:02,091 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:40:02,092 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:02,106 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:40:02,135 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:40:02,136 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:02,171 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:40:02,193 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:40:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:02,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:40:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:40:10,815 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:40:10,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503869712] [2021-05-03 00:40:10,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1503869712] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:40:10,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:40:10,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [90] imperfect sequences [] total 90 [2021-05-03 00:40:10,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467967635] [2021-05-03 00:40:10,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-03 00:40:10,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:40:10,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-03 00:40:10,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=7696, Unknown=0, NotChecked=0, Total=8010 [2021-05-03 00:40:10,817 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand has 90 states, 90 states have (on average 2.1) internal successors, (189), 89 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:40:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:40:27,924 INFO L93 Difference]: Finished difference Result 214 states and 224 transitions. [2021-05-03 00:40:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-03 00:40:27,927 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.1) internal successors, (189), 89 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 192 [2021-05-03 00:40:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:40:27,927 INFO L225 Difference]: With dead ends: 214 [2021-05-03 00:40:27,928 INFO L226 Difference]: Without dead ends: 203 [2021-05-03 00:40:27,930 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 70 SyntacticMatches, 35 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8627 ImplicationChecksByTransitivity, 17096.0ms TimeCoverageRelationStatistics Valid=936, Invalid=30216, Unknown=0, NotChecked=0, Total=31152 [2021-05-03 00:40:27,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-05-03 00:40:28,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2021-05-03 00:40:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.0209424083769634) internal successors, (195), 191 states have internal predecessors, (195), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:40:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 198 transitions. [2021-05-03 00:40:28,091 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 198 transitions. Word has length 192 [2021-05-03 00:40:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:40:28,092 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 198 transitions. [2021-05-03 00:40:28,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.1) internal successors, (189), 89 states have internal predecessors, (189), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:40:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 198 transitions. [2021-05-03 00:40:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-05-03 00:40:28,093 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:40:28,093 INFO L523 BasicCegarLoop]: trace histogram [70, 70, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:40:28,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-03 00:40:28,093 INFO L428 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:40:28,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:40:28,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1139529978, now seen corresponding path program 82 times [2021-05-03 00:40:28,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:40:28,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054738147] [2021-05-03 00:40:28,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:40:29,191 WARN L205 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:40:29,333 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3968) (< v_main_~b~0_1077 5)) InVars {main_~b~0=v_main_~b~0_1077, main_~c~0=v_main_~c~0_3968} OutVars{main_~b~0=v_main_~b~0_1077, main_~c~0=v_main_~c~0_3968} AuxVars[] AssignedVars[] [2021-05-03 00:40:29,350 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:40:29,377 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:29,381 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:40:29,397 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:40:29,429 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:40:29,430 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:29,446 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:40:29,458 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:40:29,465 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_3968) (< v_main_~b~0_1077 5)) InVars {main_~b~0=v_main_~b~0_1077, main_~c~0=v_main_~c~0_3968} OutVars{main_~b~0=v_main_~b~0_1077, main_~c~0=v_main_~c~0_3968} AuxVars[] AssignedVars[] [2021-05-03 00:40:29,466 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:40:29,489 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:29,493 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:40:29,510 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:40:29,542 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:40:29,543 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:29,559 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:40:29,570 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:40:29,591 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:40:29,592 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:29,625 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:40:29,646 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:40:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:29,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:40:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:40:37,673 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:40:37,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054738147] [2021-05-03 00:40:37,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1054738147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:40:37,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:40:37,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2021-05-03 00:40:37,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699737676] [2021-05-03 00:40:37,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-03 00:40:37,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:40:37,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-03 00:40:37,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=7873, Unknown=0, NotChecked=0, Total=8190 [2021-05-03 00:40:37,675 INFO L87 Difference]: Start difference. First operand 195 states and 198 transitions. Second operand has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:40:55,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:40:55,627 INFO L93 Difference]: Finished difference Result 216 states and 226 transitions. [2021-05-03 00:40:55,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-03 00:40:55,629 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 194 [2021-05-03 00:40:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:40:55,630 INFO L225 Difference]: With dead ends: 216 [2021-05-03 00:40:55,630 INFO L226 Difference]: Without dead ends: 205 [2021-05-03 00:40:55,631 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 80 SyntacticMatches, 26 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8546 ImplicationChecksByTransitivity, 16889.8ms TimeCoverageRelationStatistics Valid=945, Invalid=30917, Unknown=0, NotChecked=0, Total=31862 [2021-05-03 00:40:55,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-03 00:40:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 197. [2021-05-03 00:40:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 193 states have (on average 1.0207253886010363) internal successors, (197), 193 states have internal predecessors, (197), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:40:55,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 200 transitions. [2021-05-03 00:40:55,772 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 200 transitions. Word has length 194 [2021-05-03 00:40:55,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:40:55,772 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 200 transitions. [2021-05-03 00:40:55,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:40:55,772 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 200 transitions. [2021-05-03 00:40:55,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-05-03 00:40:55,773 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:40:55,773 INFO L523 BasicCegarLoop]: trace histogram [71, 71, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:40:55,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-03 00:40:55,773 INFO L428 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:40:55,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:40:55,774 INFO L82 PathProgramCache]: Analyzing trace with hash 62174052, now seen corresponding path program 83 times [2021-05-03 00:40:55,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:40:55,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035831478] [2021-05-03 00:40:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:40:56,968 WARN L205 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 155 [2021-05-03 00:40:57,123 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:40:57,124 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:57,140 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:40:57,156 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_4042) (< v_main_~b~0_1097 5)) InVars {main_~b~0=v_main_~b~0_1097, main_~c~0=v_main_~c~0_4042} OutVars{main_~b~0=v_main_~b~0_1097, main_~c~0=v_main_~c~0_4042} AuxVars[] AssignedVars[] [2021-05-03 00:40:57,158 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:40:57,159 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:57,163 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:40:57,201 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:40:57,239 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:40:57,244 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:40:57,245 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:57,264 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:40:57,279 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_4042) (< v_main_~b~0_1097 5)) InVars {main_~b~0=v_main_~b~0_1097, main_~c~0=v_main_~c~0_4042} OutVars{main_~b~0=v_main_~b~0_1097, main_~c~0=v_main_~c~0_4042} AuxVars[] AssignedVars[] [2021-05-03 00:40:57,280 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:40:57,281 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:57,286 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:40:57,327 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:40:57,370 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:40:57,390 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:40:57,391 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:40:57,423 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:40:57,445 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:40:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:57,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:40:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:40:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:41:05,428 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:41:05,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035831478] [2021-05-03 00:41:05,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2035831478] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:41:05,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:41:05,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [] total 92 [2021-05-03 00:41:05,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508709954] [2021-05-03 00:41:05,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-03 00:41:05,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:41:05,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-03 00:41:05,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=8052, Unknown=0, NotChecked=0, Total=8372 [2021-05-03 00:41:05,430 INFO L87 Difference]: Start difference. First operand 197 states and 200 transitions. Second operand has 92 states, 92 states have (on average 2.097826086956522) internal successors, (193), 91 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:41:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:41:23,730 INFO L93 Difference]: Finished difference Result 222 states and 234 transitions. [2021-05-03 00:41:23,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-03 00:41:23,732 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.097826086956522) internal successors, (193), 91 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 196 [2021-05-03 00:41:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:41:23,733 INFO L225 Difference]: With dead ends: 222 [2021-05-03 00:41:23,733 INFO L226 Difference]: Without dead ends: 211 [2021-05-03 00:41:23,734 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 84 SyntacticMatches, 23 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8647 ImplicationChecksByTransitivity, 17008.7ms TimeCoverageRelationStatistics Valid=954, Invalid=31626, Unknown=0, NotChecked=0, Total=32580 [2021-05-03 00:41:23,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-05-03 00:41:23,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 203. [2021-05-03 00:41:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 199 states have (on average 1.020100502512563) internal successors, (203), 199 states have internal predecessors, (203), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:41:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 206 transitions. [2021-05-03 00:41:23,895 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 206 transitions. Word has length 196 [2021-05-03 00:41:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:41:23,895 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 206 transitions. [2021-05-03 00:41:23,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 2.097826086956522) internal successors, (193), 91 states have internal predecessors, (193), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:41:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 206 transitions. [2021-05-03 00:41:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-05-03 00:41:23,896 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:41:23,896 INFO L523 BasicCegarLoop]: trace histogram [72, 72, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:41:23,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-03 00:41:23,896 INFO L428 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:41:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:41:23,896 INFO L82 PathProgramCache]: Analyzing trace with hash -446455742, now seen corresponding path program 84 times [2021-05-03 00:41:23,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:41:23,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370359872] [2021-05-03 00:41:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:41:25,083 WARN L205 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 158 [2021-05-03 00:41:25,245 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_4105) (< v_main_~b~0_1115 5)) InVars {main_~b~0=v_main_~b~0_1115, main_~c~0=v_main_~c~0_4105} OutVars{main_~b~0=v_main_~b~0_1115, main_~c~0=v_main_~c~0_4105} AuxVars[] AssignedVars[] [2021-05-03 00:41:25,247 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:41:25,272 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:41:25,279 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:41:25,302 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:41:25,343 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:41:25,352 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_4105) (< v_main_~b~0_1115 5)) InVars {main_~b~0=v_main_~b~0_1115, main_~c~0=v_main_~c~0_4105} OutVars{main_~b~0=v_main_~b~0_1115, main_~c~0=v_main_~c~0_4105} AuxVars[] AssignedVars[] [2021-05-03 00:41:25,354 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:41:25,379 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:41:25,383 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:41:25,400 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:41:25,435 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:41:25,455 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:41:25,457 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:41:25,489 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:41:25,511 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:41:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:41:25,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:41:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:41:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:41:34,314 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:41:34,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370359872] [2021-05-03 00:41:34,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1370359872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:41:34,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:41:34,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2021-05-03 00:41:34,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481301069] [2021-05-03 00:41:34,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-03 00:41:34,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:41:34,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-03 00:41:34,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=8233, Unknown=0, NotChecked=0, Total=8556 [2021-05-03 00:41:34,316 INFO L87 Difference]: Start difference. First operand 203 states and 206 transitions. Second operand has 93 states, 93 states have (on average 2.096774193548387) internal successors, (195), 92 states have internal predecessors, (195), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:41:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:41:56,473 INFO L93 Difference]: Finished difference Result 223 states and 233 transitions. [2021-05-03 00:41:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-03 00:41:56,475 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.096774193548387) internal successors, (195), 92 states have internal predecessors, (195), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 198 [2021-05-03 00:41:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:41:56,476 INFO L225 Difference]: With dead ends: 223 [2021-05-03 00:41:56,476 INFO L226 Difference]: Without dead ends: 212 [2021-05-03 00:41:56,477 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 72 SyntacticMatches, 36 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9078 ImplicationChecksByTransitivity, 18528.4ms TimeCoverageRelationStatistics Valid=963, Invalid=32343, Unknown=0, NotChecked=0, Total=33306 [2021-05-03 00:41:56,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-05-03 00:41:56,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2021-05-03 00:41:56,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 201 states have (on average 1.0199004975124377) internal successors, (205), 201 states have internal predecessors, (205), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:41:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2021-05-03 00:41:56,640 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 198 [2021-05-03 00:41:56,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:41:56,640 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2021-05-03 00:41:56,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.096774193548387) internal successors, (195), 92 states have internal predecessors, (195), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:41:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2021-05-03 00:41:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-03 00:41:56,641 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:41:56,641 INFO L523 BasicCegarLoop]: trace histogram [72, 72, 12, 12, 12, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:41:56,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-03 00:41:56,641 INFO L428 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:41:56,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:41:56,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1511468783, now seen corresponding path program 85 times [2021-05-03 00:41:56,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:41:56,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194007270] [2021-05-03 00:41:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:41:57,791 WARN L205 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 154 [2021-05-03 00:41:57,937 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_4164) (< v_main_~b~0_1136 5)) InVars {main_~b~0=v_main_~b~0_1136, main_~c~0=v_main_~c~0_4164} OutVars{main_~b~0=v_main_~b~0_1136, main_~c~0=v_main_~c~0_4164} AuxVars[] AssignedVars[] [2021-05-03 00:41:57,938 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:41:57,962 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:41:57,966 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:41:57,984 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:41:58,021 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:41:58,028 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_4164) (< v_main_~b~0_1136 5)) InVars {main_~b~0=v_main_~b~0_1136, main_~c~0=v_main_~c~0_4164} OutVars{main_~b~0=v_main_~b~0_1136, main_~c~0=v_main_~c~0_4164} AuxVars[] AssignedVars[] [2021-05-03 00:41:58,030 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:41:58,056 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:41:58,061 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:41:58,079 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:41:58,115 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-03 00:41:58,143 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:41:58,144 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:41:58,177 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:41:58,215 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:41:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:41:58,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:41:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:41:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:42:07,849 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:42:07,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194007270] [2021-05-03 00:42:07,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [194007270] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:42:07,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:42:07,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [94] imperfect sequences [] total 94 [2021-05-03 00:42:07,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133415104] [2021-05-03 00:42:07,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-03 00:42:07,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:42:07,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-03 00:42:07,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=8416, Unknown=0, NotChecked=0, Total=8742 [2021-05-03 00:42:07,851 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand has 94 states, 94 states have (on average 2.106382978723404) internal successors, (198), 93 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:42:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:42:30,470 INFO L93 Difference]: Finished difference Result 224 states and 234 transitions. [2021-05-03 00:42:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-03 00:42:30,472 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.106382978723404) internal successors, (198), 93 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2021-05-03 00:42:30,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:42:30,473 INFO L225 Difference]: With dead ends: 224 [2021-05-03 00:42:30,473 INFO L226 Difference]: Without dead ends: 213 [2021-05-03 00:42:30,474 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 73 SyntacticMatches, 37 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9269 ImplicationChecksByTransitivity, 20198.5ms TimeCoverageRelationStatistics Valid=972, Invalid=33068, Unknown=0, NotChecked=0, Total=34040 [2021-05-03 00:42:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-03 00:42:30,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 206. [2021-05-03 00:42:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.0198019801980198) internal successors, (206), 202 states have internal predecessors, (206), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:42:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 209 transitions. [2021-05-03 00:42:30,630 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 209 transitions. Word has length 201 [2021-05-03 00:42:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:42:30,630 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 209 transitions. [2021-05-03 00:42:30,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.106382978723404) internal successors, (198), 93 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:42:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 209 transitions. [2021-05-03 00:42:30,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-05-03 00:42:30,631 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:42:30,631 INFO L523 BasicCegarLoop]: trace histogram [72, 72, 13, 13, 13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:42:30,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-03 00:42:30,631 INFO L428 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:42:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:42:30,631 INFO L82 PathProgramCache]: Analyzing trace with hash -401142146, now seen corresponding path program 86 times [2021-05-03 00:42:30,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:42:30,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961459116] [2021-05-03 00:42:30,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:42:31,893 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 205 DAG size of output: 159 [2021-05-03 00:42:32,075 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_4226) (< v_main_~b~0_1158 5)) InVars {main_~b~0=v_main_~b~0_1158, main_~c~0=v_main_~c~0_4226} OutVars{main_~b~0=v_main_~b~0_1158, main_~c~0=v_main_~c~0_4226} AuxVars[] AssignedVars[] [2021-05-03 00:42:32,077 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:42:32,079 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:42:32,084 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:42:32,128 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:42:32,175 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:42:32,176 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:42:32,195 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:42:32,211 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_4230 6) InVars {main_~c~0=v_main_~c~0_4230} OutVars{main_~c~0=v_main_~c~0_4230} AuxVars[] AssignedVars[] [2021-05-03 00:42:32,213 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:42:32,215 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:42:32,226 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:42:32,266 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:42:32,308 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 6 v_main_~c~0_4226) (< v_main_~b~0_1158 5)) InVars {main_~b~0=v_main_~b~0_1158, main_~c~0=v_main_~c~0_4226} OutVars{main_~b~0=v_main_~b~0_1158, main_~c~0=v_main_~c~0_4226} AuxVars[] AssignedVars[] [2021-05-03 00:42:32,309 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size [2021-05-03 00:42:32,310 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:42:32,315 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-03 00:42:32,359 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 92.6 percent of original size 50 [2021-05-03 00:42:32,399 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:42:32,400 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:42:32,413 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:42:32,427 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~c~0_4230 6) InVars {main_~c~0=v_main_~c~0_4230} OutVars{main_~c~0=v_main_~c~0_4230} AuxVars[] AssignedVars[] [2021-05-03 00:42:32,429 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size [2021-05-03 00:42:32,430 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:42:32,440 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-03 00:42:32,484 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.3 percent of original size 56 [2021-05-03 00:42:32,542 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-03 00:42:32,544 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:42:32,584 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-03 00:42:32,609 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:42:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:42:32,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:42:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:42:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.