/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o200.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:55:52,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:55:52,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:55:52,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:55:52,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:55:52,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:55:52,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:55:52,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:55:52,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:55:52,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:55:52,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:55:52,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:55:52,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:55:52,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:55:52,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:55:52,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:55:52,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:55:52,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:55:52,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:55:52,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:55:52,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:55:52,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:55:52,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:55:52,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:55:52,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:55:52,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:55:52,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:55:52,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:55:52,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:55:52,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:55:52,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:55:52,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:55:52,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:55:52,469 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:55:52,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:55:52,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:55:52,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:55:52,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:55:52,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:55:52,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:55:52,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:55:52,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:55:53,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:55:53,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:55:53,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:55:53,029 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:55:53,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o200.c [2020-10-24 00:55:53,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1102977/843d0a3c699144c480548663d83d9ca7/FLAG528e7dc1e [2020-10-24 00:55:53,780 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:55:53,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o200.c [2020-10-24 00:55:53,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1102977/843d0a3c699144c480548663d83d9ca7/FLAG528e7dc1e [2020-10-24 00:55:54,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae1102977/843d0a3c699144c480548663d83d9ca7 [2020-10-24 00:55:54,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:55:54,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:55:54,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:55:54,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:55:54,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:55:54,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:55:54" (1/1) ... [2020-10-24 00:55:54,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d109f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54, skipping insertion in model container [2020-10-24 00:55:54,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:55:54" (1/1) ... [2020-10-24 00:55:54,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:55:54,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:55:54,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:55:54,444 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:55:54,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:55:54,482 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:55:54,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54 WrapperNode [2020-10-24 00:55:54,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:55:54,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:55:54,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:55:54,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:55:54,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54" (1/1) ... [2020-10-24 00:55:54,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54" (1/1) ... [2020-10-24 00:55:54,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54" (1/1) ... [2020-10-24 00:55:54,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54" (1/1) ... [2020-10-24 00:55:54,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54" (1/1) ... [2020-10-24 00:55:54,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54" (1/1) ... [2020-10-24 00:55:54,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54" (1/1) ... [2020-10-24 00:55:54,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:55:54,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:55:54,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:55:54,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:55:54,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54" (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 [2020-10-24 00:55:54,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:55:54,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:55:54,625 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:55:54,626 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-24 00:55:54,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:55:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-24 00:55:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:55:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:55:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:55:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:55:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-24 00:55:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:55:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:55:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:55:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:55:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:55:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:55:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:55:55,155 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:55:55,156 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 00:55:55,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:55:55 BoogieIcfgContainer [2020-10-24 00:55:55,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:55:55,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:55:55,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:55:55,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:55:55,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:55:54" (1/3) ... [2020-10-24 00:55:55,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43df7af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:55:55, skipping insertion in model container [2020-10-24 00:55:55,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:55:54" (2/3) ... [2020-10-24 00:55:55,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43df7af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:55:55, skipping insertion in model container [2020-10-24 00:55:55,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:55:55" (3/3) ... [2020-10-24 00:55:55,171 INFO L111 eAbstractionObserver]: Analyzing ICFG id_o200.c [2020-10-24 00:55:55,183 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:55:55,188 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:55:55,224 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:55:55,268 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:55:55,268 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:55:55,269 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:55:55,269 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:55:55,269 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:55:55,269 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:55:55,269 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:55:55,269 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:55:55,287 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-24 00:55:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-24 00:55:55,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:55,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:55,299 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:55,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:55,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2039876327, now seen corresponding path program 1 times [2020-10-24 00:55:55,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:55,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278225593] [2020-10-24 00:55:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:55,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:55,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:55:55,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278225593] [2020-10-24 00:55:55,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:55:55,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 00:55:55,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175467809] [2020-10-24 00:55:55,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 00:55:55,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:55,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 00:55:55,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 00:55:55,996 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-10-24 00:55:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:56,724 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-10-24 00:55:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 00:55:56,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-24 00:55:56,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:56,748 INFO L225 Difference]: With dead ends: 50 [2020-10-24 00:55:56,748 INFO L226 Difference]: Without dead ends: 31 [2020-10-24 00:55:56,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:55:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-24 00:55:56,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-24 00:55:56,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 00:55:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-24 00:55:56,875 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2020-10-24 00:55:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:56,878 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-24 00:55:56,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 00:55:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-24 00:55:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-24 00:55:56,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:56,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:56,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:55:56,884 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:56,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1789799325, now seen corresponding path program 1 times [2020-10-24 00:55:56,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:56,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339990129] [2020-10-24 00:55:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:57,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:57,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:57,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-24 00:55:57,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339990129] [2020-10-24 00:55:57,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:57,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 00:55:57,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934998972] [2020-10-24 00:55:57,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 00:55:57,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:57,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 00:55:57,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 00:55:57,230 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 8 states. [2020-10-24 00:55:57,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:57,807 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-10-24 00:55:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 00:55:57,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-24 00:55:57,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:57,810 INFO L225 Difference]: With dead ends: 41 [2020-10-24 00:55:57,810 INFO L226 Difference]: Without dead ends: 35 [2020-10-24 00:55:57,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-24 00:55:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-24 00:55:57,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-24 00:55:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-24 00:55:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-24 00:55:57,829 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2020-10-24 00:55:57,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:57,830 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-24 00:55:57,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 00:55:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-24 00:55:57,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-24 00:55:57,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:57,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:57,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:55:57,833 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:57,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:57,834 INFO L82 PathProgramCache]: Analyzing trace with hash 819538851, now seen corresponding path program 2 times [2020-10-24 00:55:57,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:57,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008920482] [2020-10-24 00:55:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-24 00:55:58,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008920482] [2020-10-24 00:55:58,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:58,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 00:55:58,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830668] [2020-10-24 00:55:58,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 00:55:58,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:58,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 00:55:58,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-24 00:55:58,195 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2020-10-24 00:55:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:55:58,829 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2020-10-24 00:55:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 00:55:58,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-24 00:55:58,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:55:58,832 INFO L225 Difference]: With dead ends: 45 [2020-10-24 00:55:58,832 INFO L226 Difference]: Without dead ends: 39 [2020-10-24 00:55:58,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-24 00:55:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-24 00:55:58,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-24 00:55:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-24 00:55:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-10-24 00:55:58,847 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 39 [2020-10-24 00:55:58,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:55:58,848 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-10-24 00:55:58,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 00:55:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-10-24 00:55:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-24 00:55:58,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:55:58,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:55:58,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 00:55:58,850 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:55:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:55:58,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1214666029, now seen corresponding path program 3 times [2020-10-24 00:55:58,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:55:58,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685910427] [2020-10-24 00:55:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:55:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:55:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:55:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:59,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:55:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:55:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-24 00:55:59,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685910427] [2020-10-24 00:55:59,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:55:59,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 00:55:59,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001407984] [2020-10-24 00:55:59,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 00:55:59,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:55:59,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 00:55:59,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-24 00:55:59,257 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 12 states. [2020-10-24 00:56:00,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:00,177 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-10-24 00:56:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 00:56:00,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-24 00:56:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:00,181 INFO L225 Difference]: With dead ends: 49 [2020-10-24 00:56:00,181 INFO L226 Difference]: Without dead ends: 43 [2020-10-24 00:56:00,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-24 00:56:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-24 00:56:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-24 00:56:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-24 00:56:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-24 00:56:00,197 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 46 [2020-10-24 00:56:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:00,197 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-24 00:56:00,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 00:56:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-24 00:56:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-24 00:56:00,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:00,199 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:00,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 00:56:00,200 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:00,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:00,201 INFO L82 PathProgramCache]: Analyzing trace with hash -461443027, now seen corresponding path program 4 times [2020-10-24 00:56:00,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:00,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036591371] [2020-10-24 00:56:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:00,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:00,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:00,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:00,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-24 00:56:00,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036591371] [2020-10-24 00:56:00,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:00,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-24 00:56:00,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717131106] [2020-10-24 00:56:00,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 00:56:00,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:00,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 00:56:00,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-24 00:56:00,587 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 14 states. [2020-10-24 00:56:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:01,838 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2020-10-24 00:56:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 00:56:01,840 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-24 00:56:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:01,842 INFO L225 Difference]: With dead ends: 53 [2020-10-24 00:56:01,843 INFO L226 Difference]: Without dead ends: 47 [2020-10-24 00:56:01,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2020-10-24 00:56:01,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-24 00:56:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-24 00:56:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-24 00:56:01,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-24 00:56:01,876 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 53 [2020-10-24 00:56:01,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:01,877 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-24 00:56:01,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 00:56:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-24 00:56:01,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-24 00:56:01,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:01,885 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:01,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 00:56:01,886 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:01,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:01,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1951577079, now seen corresponding path program 5 times [2020-10-24 00:56:01,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:01,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325631740] [2020-10-24 00:56:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-24 00:56:02,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325631740] [2020-10-24 00:56:02,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:02,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-24 00:56:02,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317247940] [2020-10-24 00:56:02,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 00:56:02,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:02,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 00:56:02,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-24 00:56:02,351 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 16 states. [2020-10-24 00:56:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:03,739 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-10-24 00:56:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-24 00:56:03,740 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-10-24 00:56:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:03,745 INFO L225 Difference]: With dead ends: 57 [2020-10-24 00:56:03,746 INFO L226 Difference]: Without dead ends: 51 [2020-10-24 00:56:03,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-10-24 00:56:03,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-24 00:56:03,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-24 00:56:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-24 00:56:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-10-24 00:56:03,775 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 60 [2020-10-24 00:56:03,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:03,775 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-10-24 00:56:03,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 00:56:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-10-24 00:56:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-24 00:56:03,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:03,782 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:03,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 00:56:03,785 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:03,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:03,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1085586761, now seen corresponding path program 6 times [2020-10-24 00:56:03,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:03,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273687990] [2020-10-24 00:56:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:03,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:03,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:04,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:04,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:04,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:04,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:04,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-24 00:56:04,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273687990] [2020-10-24 00:56:04,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:04,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-24 00:56:04,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021761998] [2020-10-24 00:56:04,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-24 00:56:04,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:04,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-24 00:56:04,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-24 00:56:04,370 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 18 states. [2020-10-24 00:56:06,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:06,109 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-10-24 00:56:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-24 00:56:06,110 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 67 [2020-10-24 00:56:06,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:06,112 INFO L225 Difference]: With dead ends: 61 [2020-10-24 00:56:06,112 INFO L226 Difference]: Without dead ends: 55 [2020-10-24 00:56:06,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 00:56:06,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-24 00:56:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-24 00:56:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-24 00:56:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-10-24 00:56:06,145 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 67 [2020-10-24 00:56:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:06,145 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-10-24 00:56:06,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-24 00:56:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-10-24 00:56:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-24 00:56:06,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:06,150 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:06,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 00:56:06,150 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:06,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1506086719, now seen corresponding path program 7 times [2020-10-24 00:56:06,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:06,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40134030] [2020-10-24 00:56:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:06,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:06,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:06,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:06,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:06,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:06,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-24 00:56:06,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40134030] [2020-10-24 00:56:06,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:06,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-24 00:56:06,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149096530] [2020-10-24 00:56:06,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-24 00:56:06,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:06,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-24 00:56:06,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-24 00:56:06,857 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 20 states. [2020-10-24 00:56:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:08,828 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2020-10-24 00:56:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-24 00:56:08,829 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2020-10-24 00:56:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:08,831 INFO L225 Difference]: With dead ends: 65 [2020-10-24 00:56:08,831 INFO L226 Difference]: Without dead ends: 59 [2020-10-24 00:56:08,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=161, Invalid=1819, Unknown=0, NotChecked=0, Total=1980 [2020-10-24 00:56:08,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-24 00:56:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-24 00:56:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-24 00:56:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-10-24 00:56:08,846 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 74 [2020-10-24 00:56:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:08,846 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-10-24 00:56:08,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-24 00:56:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-10-24 00:56:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-24 00:56:08,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:08,848 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:08,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 00:56:08,848 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:08,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:08,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1924014913, now seen corresponding path program 8 times [2020-10-24 00:56:08,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:08,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806070209] [2020-10-24 00:56:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:09,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:09,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:09,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:09,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:09,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-24 00:56:09,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806070209] [2020-10-24 00:56:09,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:09,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-24 00:56:09,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89093446] [2020-10-24 00:56:09,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-24 00:56:09,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:09,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-24 00:56:09,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-24 00:56:09,640 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 22 states. [2020-10-24 00:56:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:12,079 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-10-24 00:56:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-24 00:56:12,079 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 81 [2020-10-24 00:56:12,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:12,085 INFO L225 Difference]: With dead ends: 69 [2020-10-24 00:56:12,085 INFO L226 Difference]: Without dead ends: 63 [2020-10-24 00:56:12,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=180, Invalid=2270, Unknown=0, NotChecked=0, Total=2450 [2020-10-24 00:56:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-24 00:56:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-24 00:56:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-24 00:56:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-10-24 00:56:12,123 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 81 [2020-10-24 00:56:12,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:12,124 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-10-24 00:56:12,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-24 00:56:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-10-24 00:56:12,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-24 00:56:12,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:12,131 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:12,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 00:56:12,131 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:12,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1815934069, now seen corresponding path program 9 times [2020-10-24 00:56:12,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:12,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695092498] [2020-10-24 00:56:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:12,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-24 00:56:13,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695092498] [2020-10-24 00:56:13,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:13,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-24 00:56:13,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650644375] [2020-10-24 00:56:13,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-24 00:56:13,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:13,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-24 00:56:13,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-24 00:56:13,094 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 24 states. [2020-10-24 00:56:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:15,795 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-10-24 00:56:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-24 00:56:15,796 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 88 [2020-10-24 00:56:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:15,798 INFO L225 Difference]: With dead ends: 73 [2020-10-24 00:56:15,798 INFO L226 Difference]: Without dead ends: 67 [2020-10-24 00:56:15,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=199, Invalid=2771, Unknown=0, NotChecked=0, Total=2970 [2020-10-24 00:56:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-24 00:56:15,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-24 00:56:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-24 00:56:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-10-24 00:56:15,832 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 88 [2020-10-24 00:56:15,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:15,833 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-10-24 00:56:15,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-24 00:56:15,833 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-10-24 00:56:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-24 00:56:15,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:15,836 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:15,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 00:56:15,836 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:15,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:15,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1550347829, now seen corresponding path program 10 times [2020-10-24 00:56:15,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:15,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831101138] [2020-10-24 00:56:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-24 00:56:16,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831101138] [2020-10-24 00:56:16,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:16,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-24 00:56:16,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105601907] [2020-10-24 00:56:16,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-24 00:56:16,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:16,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-24 00:56:16,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-24 00:56:16,884 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 26 states. [2020-10-24 00:56:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:20,010 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2020-10-24 00:56:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-24 00:56:20,011 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 95 [2020-10-24 00:56:20,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:20,013 INFO L225 Difference]: With dead ends: 77 [2020-10-24 00:56:20,013 INFO L226 Difference]: Without dead ends: 71 [2020-10-24 00:56:20,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=218, Invalid=3322, Unknown=0, NotChecked=0, Total=3540 [2020-10-24 00:56:20,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-24 00:56:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-24 00:56:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-24 00:56:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-10-24 00:56:20,032 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 95 [2020-10-24 00:56:20,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:20,033 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-10-24 00:56:20,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-24 00:56:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-10-24 00:56:20,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-24 00:56:20,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:20,035 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:20,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 00:56:20,035 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:20,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:20,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1156643755, now seen corresponding path program 11 times [2020-10-24 00:56:20,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:20,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143860494] [2020-10-24 00:56:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:20,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:20,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:20,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:20,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:20,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:21,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:21,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:21,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-24 00:56:21,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143860494] [2020-10-24 00:56:21,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:21,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-24 00:56:21,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204441461] [2020-10-24 00:56:21,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-24 00:56:21,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:21,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-24 00:56:21,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-24 00:56:21,410 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 28 states. [2020-10-24 00:56:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:25,229 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-10-24 00:56:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-24 00:56:25,230 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 102 [2020-10-24 00:56:25,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:25,232 INFO L225 Difference]: With dead ends: 81 [2020-10-24 00:56:25,232 INFO L226 Difference]: Without dead ends: 75 [2020-10-24 00:56:25,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=237, Invalid=3923, Unknown=0, NotChecked=0, Total=4160 [2020-10-24 00:56:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-24 00:56:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-24 00:56:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-24 00:56:25,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-10-24 00:56:25,250 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 102 [2020-10-24 00:56:25,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:25,250 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-10-24 00:56:25,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-24 00:56:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-10-24 00:56:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-24 00:56:25,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:25,252 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:25,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 00:56:25,253 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:25,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1249349205, now seen corresponding path program 12 times [2020-10-24 00:56:25,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:25,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228316709] [2020-10-24 00:56:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-24 00:56:26,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228316709] [2020-10-24 00:56:26,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:26,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-24 00:56:26,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764415509] [2020-10-24 00:56:26,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-24 00:56:26,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:26,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-24 00:56:26,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-24 00:56:26,689 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 30 states. [2020-10-24 00:56:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:30,935 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-10-24 00:56:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-24 00:56:30,936 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 109 [2020-10-24 00:56:30,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:30,937 INFO L225 Difference]: With dead ends: 85 [2020-10-24 00:56:30,938 INFO L226 Difference]: Without dead ends: 79 [2020-10-24 00:56:30,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=256, Invalid=4574, Unknown=0, NotChecked=0, Total=4830 [2020-10-24 00:56:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-24 00:56:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-24 00:56:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-24 00:56:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-10-24 00:56:30,954 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 109 [2020-10-24 00:56:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:30,954 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-10-24 00:56:30,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-24 00:56:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-10-24 00:56:30,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-24 00:56:30,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:30,956 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:30,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 00:56:30,957 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:30,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:30,957 INFO L82 PathProgramCache]: Analyzing trace with hash 46324511, now seen corresponding path program 13 times [2020-10-24 00:56:30,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:30,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564670337] [2020-10-24 00:56:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:31,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-24 00:56:32,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564670337] [2020-10-24 00:56:32,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:32,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-24 00:56:32,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878543858] [2020-10-24 00:56:32,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-24 00:56:32,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:32,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-24 00:56:32,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2020-10-24 00:56:32,448 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 32 states. [2020-10-24 00:56:37,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:37,157 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2020-10-24 00:56:37,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-24 00:56:37,159 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 116 [2020-10-24 00:56:37,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:37,161 INFO L225 Difference]: With dead ends: 89 [2020-10-24 00:56:37,161 INFO L226 Difference]: Without dead ends: 83 [2020-10-24 00:56:37,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=275, Invalid=5275, Unknown=0, NotChecked=0, Total=5550 [2020-10-24 00:56:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-24 00:56:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-24 00:56:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-24 00:56:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-10-24 00:56:37,183 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 116 [2020-10-24 00:56:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:37,183 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-10-24 00:56:37,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-24 00:56:37,184 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-10-24 00:56:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-24 00:56:37,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:37,186 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:37,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 00:56:37,186 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:37,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:37,187 INFO L82 PathProgramCache]: Analyzing trace with hash 322836703, now seen corresponding path program 14 times [2020-10-24 00:56:37,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:37,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632939303] [2020-10-24 00:56:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:37,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:37,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:37,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:37,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:37,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:38,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:38,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:38,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:38,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:38,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-24 00:56:39,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632939303] [2020-10-24 00:56:39,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:39,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-24 00:56:39,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780355504] [2020-10-24 00:56:39,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-24 00:56:39,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:39,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-24 00:56:39,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-24 00:56:39,033 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 34 states. [2020-10-24 00:56:44,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:44,282 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2020-10-24 00:56:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-24 00:56:44,283 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 123 [2020-10-24 00:56:44,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:44,285 INFO L225 Difference]: With dead ends: 93 [2020-10-24 00:56:44,285 INFO L226 Difference]: Without dead ends: 87 [2020-10-24 00:56:44,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=294, Invalid=6026, Unknown=0, NotChecked=0, Total=6320 [2020-10-24 00:56:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-24 00:56:44,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-24 00:56:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-24 00:56:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-10-24 00:56:44,307 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 123 [2020-10-24 00:56:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:44,308 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-10-24 00:56:44,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-24 00:56:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-10-24 00:56:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-24 00:56:44,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:44,310 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:44,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-24 00:56:44,311 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:44,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:44,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1510117353, now seen corresponding path program 15 times [2020-10-24 00:56:44,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:44,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054720777] [2020-10-24 00:56:44,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:44,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:44,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:44,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:44,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:44,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:44,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:44,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:45,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:45,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:45,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:45,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:45,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-24 00:56:46,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054720777] [2020-10-24 00:56:46,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:46,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-24 00:56:46,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564246534] [2020-10-24 00:56:46,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-24 00:56:46,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:46,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-24 00:56:46,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-24 00:56:46,378 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 36 states. [2020-10-24 00:56:52,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:56:52,103 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2020-10-24 00:56:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-24 00:56:52,104 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 130 [2020-10-24 00:56:52,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:56:52,105 INFO L225 Difference]: With dead ends: 97 [2020-10-24 00:56:52,106 INFO L226 Difference]: Without dead ends: 91 [2020-10-24 00:56:52,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=313, Invalid=6827, Unknown=0, NotChecked=0, Total=7140 [2020-10-24 00:56:52,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-24 00:56:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-24 00:56:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-24 00:56:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-10-24 00:56:52,122 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 130 [2020-10-24 00:56:52,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:56:52,122 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-10-24 00:56:52,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-24 00:56:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-10-24 00:56:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-24 00:56:52,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:56:52,124 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:56:52,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-24 00:56:52,125 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:56:52,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:56:52,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1118097047, now seen corresponding path program 16 times [2020-10-24 00:56:52,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:56:52,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123398078] [2020-10-24 00:56:52,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:56:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:52,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:56:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:56:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:52,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:52,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:52,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:52,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:53,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:53,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:53,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:56:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:56:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-24 00:56:54,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123398078] [2020-10-24 00:56:54,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:56:54,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-24 00:56:54,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231327064] [2020-10-24 00:56:54,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-24 00:56:54,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:56:54,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-24 00:56:54,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2020-10-24 00:56:54,029 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 38 states. [2020-10-24 00:57:00,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:00,285 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2020-10-24 00:57:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-24 00:57:00,286 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 137 [2020-10-24 00:57:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:00,288 INFO L225 Difference]: With dead ends: 101 [2020-10-24 00:57:00,288 INFO L226 Difference]: Without dead ends: 95 [2020-10-24 00:57:00,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=332, Invalid=7678, Unknown=0, NotChecked=0, Total=8010 [2020-10-24 00:57:00,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-24 00:57:00,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-24 00:57:00,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-24 00:57:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-10-24 00:57:00,305 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 137 [2020-10-24 00:57:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:00,305 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-10-24 00:57:00,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-24 00:57:00,305 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-10-24 00:57:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-24 00:57:00,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:00,307 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:00,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-24 00:57:00,308 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:00,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:00,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1483874995, now seen corresponding path program 17 times [2020-10-24 00:57:00,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:00,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93289185] [2020-10-24 00:57:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:00,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:00,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:00,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:00,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:00,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:01,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:01,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:01,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:01,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:01,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:01,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:01,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:02,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-10-24 00:57:02,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93289185] [2020-10-24 00:57:02,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:57:02,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-24 00:57:02,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814920909] [2020-10-24 00:57:02,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-24 00:57:02,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:57:02,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-24 00:57:02,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2020-10-24 00:57:02,577 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 40 states. [2020-10-24 00:57:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:09,448 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-10-24 00:57:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-24 00:57:09,449 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 144 [2020-10-24 00:57:09,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:09,451 INFO L225 Difference]: With dead ends: 105 [2020-10-24 00:57:09,451 INFO L226 Difference]: Without dead ends: 99 [2020-10-24 00:57:09,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=351, Invalid=8579, Unknown=0, NotChecked=0, Total=8930 [2020-10-24 00:57:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-24 00:57:09,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-24 00:57:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-24 00:57:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-10-24 00:57:09,469 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 144 [2020-10-24 00:57:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:09,470 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-10-24 00:57:09,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-24 00:57:09,470 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-10-24 00:57:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-24 00:57:09,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:09,472 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:09,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-24 00:57:09,473 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:09,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:09,474 INFO L82 PathProgramCache]: Analyzing trace with hash 2076104691, now seen corresponding path program 18 times [2020-10-24 00:57:09,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:09,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185833947] [2020-10-24 00:57:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:09,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:10,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:10,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:10,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:10,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:10,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:10,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:11,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:11,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:11,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-10-24 00:57:12,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185833947] [2020-10-24 00:57:12,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:57:12,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-24 00:57:12,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748727250] [2020-10-24 00:57:12,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-24 00:57:12,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:57:12,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-24 00:57:12,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-10-24 00:57:12,044 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 42 states. [2020-10-24 00:57:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:19,320 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2020-10-24 00:57:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-24 00:57:19,321 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 151 [2020-10-24 00:57:19,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:19,323 INFO L225 Difference]: With dead ends: 109 [2020-10-24 00:57:19,323 INFO L226 Difference]: Without dead ends: 103 [2020-10-24 00:57:19,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1634 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=370, Invalid=9530, Unknown=0, NotChecked=0, Total=9900 [2020-10-24 00:57:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-24 00:57:19,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-24 00:57:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-24 00:57:19,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-10-24 00:57:19,339 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 151 [2020-10-24 00:57:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:19,340 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-10-24 00:57:19,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-24 00:57:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-10-24 00:57:19,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-24 00:57:19,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:19,342 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:19,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-24 00:57:19,342 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:19,343 INFO L82 PathProgramCache]: Analyzing trace with hash -566914179, now seen corresponding path program 19 times [2020-10-24 00:57:19,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:19,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592803649] [2020-10-24 00:57:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:19,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:20,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:21,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-24 00:57:22,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592803649] [2020-10-24 00:57:22,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:57:22,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-24 00:57:22,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803648207] [2020-10-24 00:57:22,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-24 00:57:22,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:57:22,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-24 00:57:22,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2020-10-24 00:57:22,057 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 44 states. [2020-10-24 00:57:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:30,248 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2020-10-24 00:57:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-24 00:57:30,249 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 158 [2020-10-24 00:57:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:30,251 INFO L225 Difference]: With dead ends: 113 [2020-10-24 00:57:30,251 INFO L226 Difference]: Without dead ends: 107 [2020-10-24 00:57:30,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=389, Invalid=10531, Unknown=0, NotChecked=0, Total=10920 [2020-10-24 00:57:30,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-24 00:57:30,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-24 00:57:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-24 00:57:30,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2020-10-24 00:57:30,270 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 158 [2020-10-24 00:57:30,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:30,271 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2020-10-24 00:57:30,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-24 00:57:30,271 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2020-10-24 00:57:30,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-24 00:57:30,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:30,273 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:30,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-24 00:57:30,273 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:30,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:30,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1423510653, now seen corresponding path program 20 times [2020-10-24 00:57:30,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:30,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10060882] [2020-10-24 00:57:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:30,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:30,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:30,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:30,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:30,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:32,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-10-24 00:57:33,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10060882] [2020-10-24 00:57:33,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:57:33,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-24 00:57:33,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318953808] [2020-10-24 00:57:33,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-24 00:57:33,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:57:33,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-24 00:57:33,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2020-10-24 00:57:33,242 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 46 states. [2020-10-24 00:57:42,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:42,095 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2020-10-24 00:57:42,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-24 00:57:42,097 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 165 [2020-10-24 00:57:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:42,099 INFO L225 Difference]: With dead ends: 117 [2020-10-24 00:57:42,099 INFO L226 Difference]: Without dead ends: 111 [2020-10-24 00:57:42,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=408, Invalid=11582, Unknown=0, NotChecked=0, Total=11990 [2020-10-24 00:57:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-24 00:57:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-24 00:57:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-24 00:57:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-10-24 00:57:42,116 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 165 [2020-10-24 00:57:42,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:42,117 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-10-24 00:57:42,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-24 00:57:42,117 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-10-24 00:57:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-24 00:57:42,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:42,119 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:42,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-24 00:57:42,119 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:42,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:42,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1276059065, now seen corresponding path program 21 times [2020-10-24 00:57:42,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:42,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322086418] [2020-10-24 00:57:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:42,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:42,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:42,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:42,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:42,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:42,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:42,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:42,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:42,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:43,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:43,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:43,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:43,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:43,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:43,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:43,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:43,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:44,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-10-24 00:57:45,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322086418] [2020-10-24 00:57:45,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:57:45,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-24 00:57:45,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967764705] [2020-10-24 00:57:45,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-24 00:57:45,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:57:45,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-24 00:57:45,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2020-10-24 00:57:45,189 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 48 states. [2020-10-24 00:57:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:57:55,000 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2020-10-24 00:57:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-24 00:57:55,004 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 172 [2020-10-24 00:57:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:57:55,006 INFO L225 Difference]: With dead ends: 121 [2020-10-24 00:57:55,006 INFO L226 Difference]: Without dead ends: 115 [2020-10-24 00:57:55,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2189 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=427, Invalid=12683, Unknown=0, NotChecked=0, Total=13110 [2020-10-24 00:57:55,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-24 00:57:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-24 00:57:55,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-24 00:57:55,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-10-24 00:57:55,040 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 172 [2020-10-24 00:57:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:57:55,040 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-10-24 00:57:55,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-24 00:57:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-10-24 00:57:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-24 00:57:55,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:57:55,042 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:57:55,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-24 00:57:55,042 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:57:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:57:55,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2103849209, now seen corresponding path program 22 times [2020-10-24 00:57:55,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:57:55,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265015031] [2020-10-24 00:57:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:57:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:55,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:57:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:55,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:57:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:55,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:55,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:55,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:55,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:55,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:55,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:56,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:56,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:56,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:56,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:56,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:56,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:57,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:57,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:57,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:57,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:57,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:57,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:57:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:57:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-10-24 00:57:58,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265015031] [2020-10-24 00:57:58,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:57:58,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-24 00:57:58,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255238628] [2020-10-24 00:57:58,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-24 00:57:58,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:57:58,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-24 00:57:58,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2020-10-24 00:57:58,323 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 50 states. [2020-10-24 00:58:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:58:08,838 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2020-10-24 00:58:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-24 00:58:08,839 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 179 [2020-10-24 00:58:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:58:08,841 INFO L225 Difference]: With dead ends: 125 [2020-10-24 00:58:08,841 INFO L226 Difference]: Without dead ends: 119 [2020-10-24 00:58:08,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=446, Invalid=13834, Unknown=0, NotChecked=0, Total=14280 [2020-10-24 00:58:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-24 00:58:08,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-10-24 00:58:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-24 00:58:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2020-10-24 00:58:08,859 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 179 [2020-10-24 00:58:08,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:58:08,859 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2020-10-24 00:58:08,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-24 00:58:08,859 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2020-10-24 00:58:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-24 00:58:08,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:58:08,861 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:58:08,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-24 00:58:08,861 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:58:08,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:58:08,862 INFO L82 PathProgramCache]: Analyzing trace with hash 717754129, now seen corresponding path program 23 times [2020-10-24 00:58:08,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:58:08,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445219164] [2020-10-24 00:58:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:58:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:58:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:08,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:58:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:09,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:09,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:09,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:09,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:09,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:09,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:10,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:10,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:10,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:11,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:11,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:11,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:11,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-10-24 00:58:12,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445219164] [2020-10-24 00:58:12,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:58:12,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-24 00:58:12,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405913368] [2020-10-24 00:58:12,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-24 00:58:12,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:58:12,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-24 00:58:12,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2020-10-24 00:58:12,366 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 52 states. [2020-10-24 00:58:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:58:23,677 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2020-10-24 00:58:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-24 00:58:23,678 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 186 [2020-10-24 00:58:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:58:23,680 INFO L225 Difference]: With dead ends: 129 [2020-10-24 00:58:23,680 INFO L226 Difference]: Without dead ends: 123 [2020-10-24 00:58:23,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2604 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=465, Invalid=15035, Unknown=0, NotChecked=0, Total=15500 [2020-10-24 00:58:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-24 00:58:23,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-24 00:58:23,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-24 00:58:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2020-10-24 00:58:23,702 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 186 [2020-10-24 00:58:23,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:58:23,702 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2020-10-24 00:58:23,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-24 00:58:23,703 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2020-10-24 00:58:23,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-24 00:58:23,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:58:23,704 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:58:23,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-24 00:58:23,704 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:58:23,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:58:23,705 INFO L82 PathProgramCache]: Analyzing trace with hash -764338287, now seen corresponding path program 24 times [2020-10-24 00:58:23,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:58:23,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757122437] [2020-10-24 00:58:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:58:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:58:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:58:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:23,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:24,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:24,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:24,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:24,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:24,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:24,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:24,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:25,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:25,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:25,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:25,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:26,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:26,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:26,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:26,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:27,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-10-24 00:58:27,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757122437] [2020-10-24 00:58:27,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:58:27,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-24 00:58:27,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815722790] [2020-10-24 00:58:27,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-24 00:58:27,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:58:27,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-24 00:58:27,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2020-10-24 00:58:27,552 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 54 states. [2020-10-24 00:58:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:58:39,791 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2020-10-24 00:58:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-24 00:58:39,792 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 193 [2020-10-24 00:58:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:58:39,794 INFO L225 Difference]: With dead ends: 133 [2020-10-24 00:58:39,795 INFO L226 Difference]: Without dead ends: 127 [2020-10-24 00:58:39,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=484, Invalid=16286, Unknown=0, NotChecked=0, Total=16770 [2020-10-24 00:58:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-24 00:58:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-10-24 00:58:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-24 00:58:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2020-10-24 00:58:39,815 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 193 [2020-10-24 00:58:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:58:39,816 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2020-10-24 00:58:39,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-24 00:58:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2020-10-24 00:58:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-24 00:58:39,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:58:39,818 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:58:39,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-24 00:58:39,818 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:58:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:58:39,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1134618149, now seen corresponding path program 25 times [2020-10-24 00:58:39,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:58:39,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387054302] [2020-10-24 00:58:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:58:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:58:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:39,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:58:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:40,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:40,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:40,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:40,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:40,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:40,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:40,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:40,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:41,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:41,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:41,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:41,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:42,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:42,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:42,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:42,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:43,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:43,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:43,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-10-24 00:58:44,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387054302] [2020-10-24 00:58:44,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:58:44,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-24 00:58:44,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819228133] [2020-10-24 00:58:44,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-24 00:58:44,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:58:44,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-24 00:58:44,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2020-10-24 00:58:44,276 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 56 states. [2020-10-24 00:58:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:58:57,962 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2020-10-24 00:58:57,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-24 00:58:57,963 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 200 [2020-10-24 00:58:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:58:57,965 INFO L225 Difference]: With dead ends: 137 [2020-10-24 00:58:57,966 INFO L226 Difference]: Without dead ends: 131 [2020-10-24 00:58:57,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3055 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=503, Invalid=17587, Unknown=0, NotChecked=0, Total=18090 [2020-10-24 00:58:57,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-24 00:58:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-10-24 00:58:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-24 00:58:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-10-24 00:58:57,990 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 200 [2020-10-24 00:58:57,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:58:57,990 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-10-24 00:58:57,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-24 00:58:57,990 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-10-24 00:58:57,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-24 00:58:57,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:58:57,992 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:58:57,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-24 00:58:57,993 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:58:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:58:57,993 INFO L82 PathProgramCache]: Analyzing trace with hash 89062939, now seen corresponding path program 26 times [2020-10-24 00:58:57,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:58:57,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117049201] [2020-10-24 00:58:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:58:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:58,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:58:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:58:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:58,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:58,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:59,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:59,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:59,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:58:59,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:58:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:00,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:00,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:00,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:00,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:00,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:01,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:01,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:01,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:01,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:02,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:02,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:02,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:02,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-10-24 00:59:03,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117049201] [2020-10-24 00:59:03,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:59:03,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-24 00:59:03,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518553285] [2020-10-24 00:59:03,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-24 00:59:03,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:03,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-24 00:59:03,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2020-10-24 00:59:03,291 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 58 states. [2020-10-24 00:59:18,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:18,386 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2020-10-24 00:59:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-24 00:59:18,387 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 207 [2020-10-24 00:59:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:18,390 INFO L225 Difference]: With dead ends: 141 [2020-10-24 00:59:18,390 INFO L226 Difference]: Without dead ends: 135 [2020-10-24 00:59:18,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3294 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=522, Invalid=18938, Unknown=0, NotChecked=0, Total=19460 [2020-10-24 00:59:18,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-24 00:59:18,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-24 00:59:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-24 00:59:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2020-10-24 00:59:18,411 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 207 [2020-10-24 00:59:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:18,412 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2020-10-24 00:59:18,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-24 00:59:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2020-10-24 00:59:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-24 00:59:18,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:18,415 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:18,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-24 00:59:18,415 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:18,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1428553051, now seen corresponding path program 27 times [2020-10-24 00:59:18,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:18,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242988797] [2020-10-24 00:59:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:18,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:18,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:59:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:18,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:18,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:20,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:20,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:20,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:20,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:20,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:21,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:21,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:21,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:21,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:22,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:22,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:22,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-10-24 00:59:23,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242988797] [2020-10-24 00:59:23,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:59:23,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-24 00:59:23,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713410759] [2020-10-24 00:59:23,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-24 00:59:23,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:23,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-24 00:59:23,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2020-10-24 00:59:23,937 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 60 states. [2020-10-24 00:59:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:59:39,785 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2020-10-24 00:59:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-24 00:59:39,787 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 214 [2020-10-24 00:59:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:59:39,789 INFO L225 Difference]: With dead ends: 145 [2020-10-24 00:59:39,789 INFO L226 Difference]: Without dead ends: 139 [2020-10-24 00:59:39,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3542 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=541, Invalid=20339, Unknown=0, NotChecked=0, Total=20880 [2020-10-24 00:59:39,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-24 00:59:39,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-10-24 00:59:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-24 00:59:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2020-10-24 00:59:39,809 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 214 [2020-10-24 00:59:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:59:39,810 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2020-10-24 00:59:39,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-24 00:59:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2020-10-24 00:59:39,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-24 00:59:39,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:59:39,812 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:59:39,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-24 00:59:39,812 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:59:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:59:39,813 INFO L82 PathProgramCache]: Analyzing trace with hash 799238821, now seen corresponding path program 28 times [2020-10-24 00:59:39,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:59:39,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474283728] [2020-10-24 00:59:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:59:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:59:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 00:59:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:40,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:40,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:40,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:40,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:40,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:40,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:41,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:41,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:41,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:41,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:42,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:42,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:43,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:43,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:43,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:44,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:44,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:44,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 00:59:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:59:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-10-24 00:59:45,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474283728] [2020-10-24 00:59:45,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 00:59:45,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-24 00:59:45,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959926953] [2020-10-24 00:59:45,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-24 00:59:45,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:59:45,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-24 00:59:45,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2020-10-24 00:59:45,360 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 62 states. [2020-10-24 01:00:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:00:02,332 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2020-10-24 01:00:02,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-24 01:00:02,333 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 221 [2020-10-24 01:00:02,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:00:02,335 INFO L225 Difference]: With dead ends: 149 [2020-10-24 01:00:02,336 INFO L226 Difference]: Without dead ends: 143 [2020-10-24 01:00:02,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3799 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=560, Invalid=21790, Unknown=0, NotChecked=0, Total=22350 [2020-10-24 01:00:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-24 01:00:02,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-24 01:00:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-24 01:00:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2020-10-24 01:00:02,357 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 221 [2020-10-24 01:00:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:00:02,357 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2020-10-24 01:00:02,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-24 01:00:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2020-10-24 01:00:02,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-24 01:00:02,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:00:02,359 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:00:02,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-24 01:00:02,360 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:00:02,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:00:02,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1596143249, now seen corresponding path program 29 times [2020-10-24 01:00:02,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:00:02,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680570802] [2020-10-24 01:00:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:00:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:02,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:00:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:02,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:00:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:02,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:02,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:03,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:03,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:03,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:03,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:03,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:04,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:04,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:04,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:04,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:04,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:04,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:04,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:05,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:05,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:05,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:06,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:06,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:07,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:07,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:07,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-10-24 01:00:08,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680570802] [2020-10-24 01:00:08,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:00:08,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-24 01:00:08,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397962658] [2020-10-24 01:00:08,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-24 01:00:08,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:00:08,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-24 01:00:08,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2020-10-24 01:00:08,149 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 64 states. [2020-10-24 01:00:25,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:00:25,604 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2020-10-24 01:00:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-10-24 01:00:25,606 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 228 [2020-10-24 01:00:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:00:25,608 INFO L225 Difference]: With dead ends: 153 [2020-10-24 01:00:25,608 INFO L226 Difference]: Without dead ends: 147 [2020-10-24 01:00:25,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4065 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=579, Invalid=23291, Unknown=0, NotChecked=0, Total=23870 [2020-10-24 01:00:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-24 01:00:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-10-24 01:00:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-24 01:00:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2020-10-24 01:00:25,636 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 228 [2020-10-24 01:00:25,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:00:25,637 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2020-10-24 01:00:25,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-24 01:00:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2020-10-24 01:00:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-24 01:00:25,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:00:25,639 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:00:25,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-24 01:00:25,639 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:00:25,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:00:25,640 INFO L82 PathProgramCache]: Analyzing trace with hash 425616687, now seen corresponding path program 30 times [2020-10-24 01:00:25,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:00:25,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459633139] [2020-10-24 01:00:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:00:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:25,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:00:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:25,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:00:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:26,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:26,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:26,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:26,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:27,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:27,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:27,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:27,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:27,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:27,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:28,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:28,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:28,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:28,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:28,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:29,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:29,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:29,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:30,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:30,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:31,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-10-24 01:00:31,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459633139] [2020-10-24 01:00:31,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:00:31,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-24 01:00:31,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665606088] [2020-10-24 01:00:31,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-24 01:00:31,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:00:31,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-24 01:00:31,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2020-10-24 01:00:31,910 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 66 states. [2020-10-24 01:00:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:00:51,526 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2020-10-24 01:00:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-10-24 01:00:51,527 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 235 [2020-10-24 01:00:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:00:51,530 INFO L225 Difference]: With dead ends: 157 [2020-10-24 01:00:51,530 INFO L226 Difference]: Without dead ends: 151 [2020-10-24 01:00:51,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=598, Invalid=24842, Unknown=0, NotChecked=0, Total=25440 [2020-10-24 01:00:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-24 01:00:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-24 01:00:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-24 01:00:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-10-24 01:00:51,553 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 235 [2020-10-24 01:00:51,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:00:51,553 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-10-24 01:00:51,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-24 01:00:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-10-24 01:00:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-24 01:00:51,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:00:51,556 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:00:51,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-24 01:00:51,556 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:00:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:00:51,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1368092217, now seen corresponding path program 31 times [2020-10-24 01:00:51,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:00:51,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174657911] [2020-10-24 01:00:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:00:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:51,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:00:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:00:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:51,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:51,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:52,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:52,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:52,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:52,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:52,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:53,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:53,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:53,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:53,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:53,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:54,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:54,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:54,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:55,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:55,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:56,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:56,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:56,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:57,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:57,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:00:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:00:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-10-24 01:00:58,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174657911] [2020-10-24 01:00:58,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:00:58,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-24 01:00:58,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415336005] [2020-10-24 01:00:58,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-24 01:00:58,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:00:58,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-24 01:00:58,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2020-10-24 01:00:58,280 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 68 states. [2020-10-24 01:01:19,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:01:19,663 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2020-10-24 01:01:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2020-10-24 01:01:19,665 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 242 [2020-10-24 01:01:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:01:19,667 INFO L225 Difference]: With dead ends: 161 [2020-10-24 01:01:19,667 INFO L226 Difference]: Without dead ends: 155 [2020-10-24 01:01:19,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=617, Invalid=26443, Unknown=0, NotChecked=0, Total=27060 [2020-10-24 01:01:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-24 01:01:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-10-24 01:01:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-24 01:01:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2020-10-24 01:01:19,692 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 242 [2020-10-24 01:01:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:01:19,692 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2020-10-24 01:01:19,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-24 01:01:19,692 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2020-10-24 01:01:19,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-24 01:01:19,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:01:19,695 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:01:19,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-24 01:01:19,695 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:01:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:01:19,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1645220423, now seen corresponding path program 32 times [2020-10-24 01:01:19,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:01:19,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355701968] [2020-10-24 01:01:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:01:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:01:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:01:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:20,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:21,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:21,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:22,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:22,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:23,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:23,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:23,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:23,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:23,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:24,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:24,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:24,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:25,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:25,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:26,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-10-24 01:01:27,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355701968] [2020-10-24 01:01:27,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:01:27,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-24 01:01:27,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352406065] [2020-10-24 01:01:27,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-24 01:01:27,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:01:27,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-24 01:01:27,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2020-10-24 01:01:27,900 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 70 states. [2020-10-24 01:01:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:01:51,657 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2020-10-24 01:01:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2020-10-24 01:01:51,659 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 249 [2020-10-24 01:01:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:01:51,662 INFO L225 Difference]: With dead ends: 165 [2020-10-24 01:01:51,663 INFO L226 Difference]: Without dead ends: 159 [2020-10-24 01:01:51,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4917 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=636, Invalid=28094, Unknown=0, NotChecked=0, Total=28730 [2020-10-24 01:01:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-24 01:01:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-10-24 01:01:51,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-24 01:01:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2020-10-24 01:01:51,690 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 249 [2020-10-24 01:01:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:01:51,691 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2020-10-24 01:01:51,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-24 01:01:51,691 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2020-10-24 01:01:51,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-24 01:01:51,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:01:51,694 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:01:51,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-24 01:01:51,694 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:01:51,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:01:51,695 INFO L82 PathProgramCache]: Analyzing trace with hash 411693315, now seen corresponding path program 33 times [2020-10-24 01:01:51,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:01:51,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154360749] [2020-10-24 01:01:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:01:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:51,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:01:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:51,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:01:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:52,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:52,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:52,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:52,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:52,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:52,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:53,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:53,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:53,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:53,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:54,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:54,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:54,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:54,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:54,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:55,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:55,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:55,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:56,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:56,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:56,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:56,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:57,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:57,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:57,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:58,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:58,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:58,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:01:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:01:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-10-24 01:01:59,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154360749] [2020-10-24 01:01:59,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:01:59,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-24 01:01:59,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391986444] [2020-10-24 01:01:59,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-24 01:01:59,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:01:59,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-24 01:01:59,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2020-10-24 01:01:59,917 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 72 states. [2020-10-24 01:02:23,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:02:23,368 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2020-10-24 01:02:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2020-10-24 01:02:23,370 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 256 [2020-10-24 01:02:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:02:23,372 INFO L225 Difference]: With dead ends: 169 [2020-10-24 01:02:23,372 INFO L226 Difference]: Without dead ends: 163 [2020-10-24 01:02:23,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5219 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=655, Invalid=29795, Unknown=0, NotChecked=0, Total=30450 [2020-10-24 01:02:23,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-24 01:02:23,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-24 01:02:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-24 01:02:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2020-10-24 01:02:23,394 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 256 [2020-10-24 01:02:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:02:23,394 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2020-10-24 01:02:23,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-24 01:02:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2020-10-24 01:02:23,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-24 01:02:23,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:02:23,397 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:02:23,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-24 01:02:23,397 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:02:23,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:02:23,397 INFO L82 PathProgramCache]: Analyzing trace with hash 206046275, now seen corresponding path program 34 times [2020-10-24 01:02:23,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:02:23,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645393978] [2020-10-24 01:02:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:02:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:23,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:02:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:02:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:24,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:25,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:25,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:25,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:25,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:25,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:26,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:27,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:27,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:27,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:27,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:28,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:28,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:29,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:29,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:30,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:30,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:31,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-10-24 01:02:32,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645393978] [2020-10-24 01:02:32,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:02:32,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-24 01:02:32,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171748359] [2020-10-24 01:02:32,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-24 01:02:32,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:02:32,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-24 01:02:32,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2020-10-24 01:02:32,022 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 74 states. [2020-10-24 01:02:57,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:02:57,766 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2020-10-24 01:02:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-10-24 01:02:57,767 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 263 [2020-10-24 01:02:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:02:57,768 INFO L225 Difference]: With dead ends: 173 [2020-10-24 01:02:57,768 INFO L226 Difference]: Without dead ends: 167 [2020-10-24 01:02:57,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5530 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=674, Invalid=31546, Unknown=0, NotChecked=0, Total=32220 [2020-10-24 01:02:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-24 01:02:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-10-24 01:02:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-24 01:02:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2020-10-24 01:02:57,790 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 263 [2020-10-24 01:02:57,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:02:57,791 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2020-10-24 01:02:57,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-24 01:02:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2020-10-24 01:02:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-24 01:02:57,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:02:57,793 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:02:57,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-24 01:02:57,793 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:02:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:02:57,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1711517235, now seen corresponding path program 35 times [2020-10-24 01:02:57,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:02:57,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163921044] [2020-10-24 01:02:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:02:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:02:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:02:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:58,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:59,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:59,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:59,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:59,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:59,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:02:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:00,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:00,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:00,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:00,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:01,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:01,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:02,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:02,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:02,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:02,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:03,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:03,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:04,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:04,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:05,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:05,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:05,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:05,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-10-24 01:03:06,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163921044] [2020-10-24 01:03:06,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:03:06,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-24 01:03:06,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368650120] [2020-10-24 01:03:06,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-24 01:03:06,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:03:06,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-24 01:03:06,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2020-10-24 01:03:06,981 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 76 states. [2020-10-24 01:03:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:03:34,030 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2020-10-24 01:03:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2020-10-24 01:03:34,032 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 270 [2020-10-24 01:03:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:03:34,034 INFO L225 Difference]: With dead ends: 177 [2020-10-24 01:03:34,034 INFO L226 Difference]: Without dead ends: 171 [2020-10-24 01:03:34,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5850 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=693, Invalid=33347, Unknown=0, NotChecked=0, Total=34040 [2020-10-24 01:03:34,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-24 01:03:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-24 01:03:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-24 01:03:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2020-10-24 01:03:34,056 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 270 [2020-10-24 01:03:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:03:34,056 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2020-10-24 01:03:34,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-24 01:03:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2020-10-24 01:03:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-24 01:03:34,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:03:34,058 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:03:34,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-24 01:03:34,059 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:03:34,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:03:34,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2032752435, now seen corresponding path program 36 times [2020-10-24 01:03:34,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:03:34,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920249000] [2020-10-24 01:03:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:03:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:03:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:03:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:34,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:35,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:35,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:35,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:35,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:36,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:36,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:37,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:37,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:37,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:37,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:38,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:38,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:39,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:39,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:39,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:39,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:40,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:40,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:41,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:41,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:41,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:42,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:42,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:42,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:03:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:03:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-10-24 01:03:43,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920249000] [2020-10-24 01:03:43,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:03:43,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-10-24 01:03:43,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420637948] [2020-10-24 01:03:43,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-24 01:03:43,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:03:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-24 01:03:43,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2020-10-24 01:03:43,980 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 78 states. [2020-10-24 01:04:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:04:14,004 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2020-10-24 01:04:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2020-10-24 01:04:14,005 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 277 [2020-10-24 01:04:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:04:14,008 INFO L225 Difference]: With dead ends: 181 [2020-10-24 01:04:14,008 INFO L226 Difference]: Without dead ends: 175 [2020-10-24 01:04:14,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6179 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=712, Invalid=35198, Unknown=0, NotChecked=0, Total=35910 [2020-10-24 01:04:14,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-24 01:04:14,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-10-24 01:04:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-24 01:04:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2020-10-24 01:04:14,031 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 277 [2020-10-24 01:04:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:04:14,032 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2020-10-24 01:04:14,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-24 01:04:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2020-10-24 01:04:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-24 01:04:14,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:04:14,034 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:04:14,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-24 01:04:14,034 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:04:14,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:04:14,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1652986007, now seen corresponding path program 37 times [2020-10-24 01:04:14,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:04:14,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067851267] [2020-10-24 01:04:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:04:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:14,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:04:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:14,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:04:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:14,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:14,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:15,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:15,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:15,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:15,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:15,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:16,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:17,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:17,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:17,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:18,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:18,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:18,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:19,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:19,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:20,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:20,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:20,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:21,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:21,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:22,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:22,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:23,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:25,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-10-24 01:04:25,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067851267] [2020-10-24 01:04:25,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:04:25,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-10-24 01:04:25,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991143775] [2020-10-24 01:04:25,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-10-24 01:04:25,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:04:25,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-10-24 01:04:25,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=6163, Unknown=0, NotChecked=0, Total=6320 [2020-10-24 01:04:25,265 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 80 states. [2020-10-24 01:04:57,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:04:57,150 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2020-10-24 01:04:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2020-10-24 01:04:57,152 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 284 [2020-10-24 01:04:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:04:57,155 INFO L225 Difference]: With dead ends: 185 [2020-10-24 01:04:57,155 INFO L226 Difference]: Without dead ends: 179 [2020-10-24 01:04:57,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6517 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=731, Invalid=37099, Unknown=0, NotChecked=0, Total=37830 [2020-10-24 01:04:57,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-24 01:04:57,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-24 01:04:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-24 01:04:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2020-10-24 01:04:57,178 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 284 [2020-10-24 01:04:57,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:04:57,178 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2020-10-24 01:04:57,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-10-24 01:04:57,178 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2020-10-24 01:04:57,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-24 01:04:57,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:04:57,180 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:04:57,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-24 01:04:57,181 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:04:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:04:57,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1670110039, now seen corresponding path program 38 times [2020-10-24 01:04:57,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:04:57,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091879959] [2020-10-24 01:04:57,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:04:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:57,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:04:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:57,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:04:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:57,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:57,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:57,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:58,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:58,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:59,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:59,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:59,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:59,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:04:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:04:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:00,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:00,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:01,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:01,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:02,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:02,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:03,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:03,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:04,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:04,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:04,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:05,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:05,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:05,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:06,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:06,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:07,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-10-24 01:05:09,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091879959] [2020-10-24 01:05:09,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:05:09,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-10-24 01:05:09,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364258500] [2020-10-24 01:05:09,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-10-24 01:05:09,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:09,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-10-24 01:05:09,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=6481, Unknown=0, NotChecked=0, Total=6642 [2020-10-24 01:05:09,412 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 82 states. [2020-10-24 01:05:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:05:43,049 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2020-10-24 01:05:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-10-24 01:05:43,050 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 291 [2020-10-24 01:05:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:05:43,052 INFO L225 Difference]: With dead ends: 189 [2020-10-24 01:05:43,052 INFO L226 Difference]: Without dead ends: 183 [2020-10-24 01:05:43,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6864 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=750, Invalid=39050, Unknown=0, NotChecked=0, Total=39800 [2020-10-24 01:05:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-24 01:05:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-10-24 01:05:43,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-24 01:05:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2020-10-24 01:05:43,074 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 291 [2020-10-24 01:05:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:05:43,074 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2020-10-24 01:05:43,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-10-24 01:05:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2020-10-24 01:05:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-24 01:05:43,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:05:43,076 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:05:43,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-24 01:05:43,077 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:05:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:05:43,077 INFO L82 PathProgramCache]: Analyzing trace with hash -2025018015, now seen corresponding path program 39 times [2020-10-24 01:05:43,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:05:43,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270933220] [2020-10-24 01:05:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:05:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:43,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:05:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:05:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:43,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:44,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:44,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:44,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:45,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:45,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:46,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:46,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:46,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:47,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:47,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:47,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:48,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:48,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:48,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:49,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:49,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:50,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:50,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:51,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:51,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:52,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:52,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:52,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:53,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:54,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:54,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:05:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2020-10-24 01:05:56,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270933220] [2020-10-24 01:05:56,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:05:56,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-10-24 01:05:56,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949416382] [2020-10-24 01:05:56,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-10-24 01:05:56,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:56,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-10-24 01:05:56,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=6807, Unknown=0, NotChecked=0, Total=6972 [2020-10-24 01:05:56,222 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 84 states. [2020-10-24 01:06:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:06:32,506 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2020-10-24 01:06:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2020-10-24 01:06:32,508 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 298 [2020-10-24 01:06:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:06:32,509 INFO L225 Difference]: With dead ends: 193 [2020-10-24 01:06:32,509 INFO L226 Difference]: Without dead ends: 187 [2020-10-24 01:06:32,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7220 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=769, Invalid=41051, Unknown=0, NotChecked=0, Total=41820 [2020-10-24 01:06:32,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-24 01:06:32,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-10-24 01:06:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-24 01:06:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2020-10-24 01:06:32,529 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 298 [2020-10-24 01:06:32,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:06:32,530 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2020-10-24 01:06:32,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-10-24 01:06:32,530 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2020-10-24 01:06:32,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-24 01:06:32,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:06:32,532 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:06:32,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-24 01:06:32,532 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:06:32,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:06:32,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1948804127, now seen corresponding path program 40 times [2020-10-24 01:06:32,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:06:32,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594274854] [2020-10-24 01:06:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:06:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:32,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:06:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:32,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:06:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:33,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:33,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:33,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:34,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:34,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:34,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:34,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:35,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:35,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:35,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:36,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:37,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:37,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:38,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:38,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:39,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:39,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:39,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:40,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:40,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:40,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:41,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:41,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:41,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:42,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:43,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:43,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:44,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:06:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:06:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-10-24 01:06:45,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594274854] [2020-10-24 01:06:45,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:06:45,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-10-24 01:06:45,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070750355] [2020-10-24 01:06:45,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-10-24 01:06:45,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:06:45,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-10-24 01:06:45,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=7141, Unknown=0, NotChecked=0, Total=7310 [2020-10-24 01:06:45,965 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 86 states. [2020-10-24 01:07:24,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:07:24,896 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2020-10-24 01:07:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-10-24 01:07:24,898 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 305 [2020-10-24 01:07:24,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:07:24,900 INFO L225 Difference]: With dead ends: 197 [2020-10-24 01:07:24,900 INFO L226 Difference]: Without dead ends: 191 [2020-10-24 01:07:24,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7585 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=788, Invalid=43102, Unknown=0, NotChecked=0, Total=43890 [2020-10-24 01:07:24,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-24 01:07:24,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2020-10-24 01:07:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-24 01:07:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2020-10-24 01:07:24,924 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 305 [2020-10-24 01:07:24,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:07:24,925 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2020-10-24 01:07:24,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-10-24 01:07:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2020-10-24 01:07:24,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-24 01:07:24,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:07:24,927 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:07:24,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-24 01:07:24,927 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:07:24,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:07:24,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1173530667, now seen corresponding path program 41 times [2020-10-24 01:07:24,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:07:24,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318060451] [2020-10-24 01:07:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:07:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:25,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:07:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:25,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:07:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:25,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:25,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:25,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:26,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:26,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:27,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:27,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:28,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:28,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:28,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:29,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:29,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:30,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:30,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:31,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:31,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:32,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:32,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:33,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:33,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:34,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:35,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:35,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:36,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:37,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:07:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:07:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2020-10-24 01:07:39,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318060451] [2020-10-24 01:07:39,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:07:39,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-24 01:07:39,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439730260] [2020-10-24 01:07:39,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-24 01:07:39,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:07:39,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-24 01:07:39,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=7483, Unknown=0, NotChecked=0, Total=7656 [2020-10-24 01:07:39,267 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 88 states. [2020-10-24 01:08:22,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:08:22,898 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2020-10-24 01:08:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-24 01:08:22,900 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 312 [2020-10-24 01:08:22,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:08:22,903 INFO L225 Difference]: With dead ends: 201 [2020-10-24 01:08:22,903 INFO L226 Difference]: Without dead ends: 195 [2020-10-24 01:08:22,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7959 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=807, Invalid=45203, Unknown=0, NotChecked=0, Total=46010 [2020-10-24 01:08:22,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-24 01:08:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-10-24 01:08:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-24 01:08:22,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2020-10-24 01:08:22,930 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 312 [2020-10-24 01:08:22,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:08:22,930 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2020-10-24 01:08:22,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-24 01:08:22,930 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2020-10-24 01:08:22,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-24 01:08:22,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:08:22,933 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:08:22,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-24 01:08:22,933 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:08:22,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:08:22,933 INFO L82 PathProgramCache]: Analyzing trace with hash -592844181, now seen corresponding path program 42 times [2020-10-24 01:08:22,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:08:22,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979653438] [2020-10-24 01:08:22,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:08:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:23,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:08:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:23,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-24 01:08:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:23,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:23,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:23,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:24,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:24,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:25,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:25,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:26,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:26,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:27,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:27,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:27,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:28,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:28,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:29,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:29,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:29,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:30,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:30,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:30,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:31,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:32,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:33,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:33,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:34,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:34,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:36,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:36,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:37,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-24 01:08:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2020-10-24 01:08:39,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979653438] [2020-10-24 01:08:39,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:08:39,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-10-24 01:08:39,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838822678] [2020-10-24 01:08:39,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-10-24 01:08:39,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:08:39,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-10-24 01:08:39,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=7833, Unknown=0, NotChecked=0, Total=8010 [2020-10-24 01:08:39,031 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 90 states.