/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:26:02,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:26:02,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:26:02,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:26:02,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:26:02,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:26:02,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:26:02,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:26:02,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:26:02,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:26:02,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:26:02,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:26:02,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:26:02,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:26:02,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:26:02,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:26:02,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:26:02,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:26:02,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:26:02,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:26:02,432 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:26:02,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:26:02,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:26:02,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:26:02,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:26:02,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:26:02,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:26:02,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:26:02,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:26:02,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:26:02,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:26:02,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:26:02,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:26:02,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:26:02,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:26:02,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:26:02,450 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:26:02,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:26:02,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:26:02,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:26:02,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:26:02,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:26:02,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:26:02,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:26:02,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:26:02,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:26:02,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:26:02,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:26:02,876 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:26:02,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-10-23 20:26:02,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8472328/a7d9ebc5d19e42299f91e519ac283248/FLAG73f67ce0a [2020-10-23 20:26:03,595 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:26:03,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition03-1.c [2020-10-23 20:26:03,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8472328/a7d9ebc5d19e42299f91e519ac283248/FLAG73f67ce0a [2020-10-23 20:26:03,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8472328/a7d9ebc5d19e42299f91e519ac283248 [2020-10-23 20:26:03,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:26:03,991 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:26:03,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:26:03,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:26:04,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:26:04,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:26:03" (1/1) ... [2020-10-23 20:26:04,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1158ea49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04, skipping insertion in model container [2020-10-23 20:26:04,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:26:03" (1/1) ... [2020-10-23 20:26:04,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:26:04,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:26:04,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:26:04,202 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:26:04,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:26:04,252 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:26:04,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04 WrapperNode [2020-10-23 20:26:04,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:26:04,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:26:04,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:26:04,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:26:04,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04" (1/1) ... [2020-10-23 20:26:04,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04" (1/1) ... [2020-10-23 20:26:04,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04" (1/1) ... [2020-10-23 20:26:04,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04" (1/1) ... [2020-10-23 20:26:04,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04" (1/1) ... [2020-10-23 20:26:04,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04" (1/1) ... [2020-10-23 20:26:04,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04" (1/1) ... [2020-10-23 20:26:04,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:26:04,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:26:04,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:26:04,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:26:04,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04" (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 [2020-10-23 20:26:04,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:26:04,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:26:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:26:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-10-23 20:26:04,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:26:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:26:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:26:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:26:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:26:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:26:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-10-23 20:26:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:26:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:26:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:26:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:26:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:26:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:26:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:26:04,829 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:26:04,829 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:26:04,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:26:04 BoogieIcfgContainer [2020-10-23 20:26:04,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:26:04,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:26:04,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:26:04,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:26:04,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:26:03" (1/3) ... [2020-10-23 20:26:04,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2944a676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:26:04, skipping insertion in model container [2020-10-23 20:26:04,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:04" (2/3) ... [2020-10-23 20:26:04,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2944a676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:26:04, skipping insertion in model container [2020-10-23 20:26:04,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:26:04" (3/3) ... [2020-10-23 20:26:04,841 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-10-23 20:26:04,855 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:26:04,861 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:26:04,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:26:04,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:26:04,939 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:26:04,940 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:26:04,940 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:26:04,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:26:04,940 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:26:04,940 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:26:04,950 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:26:05,003 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-23 20:26:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 20:26:05,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:05,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:05,020 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:05,030 INFO L82 PathProgramCache]: Analyzing trace with hash -326655385, now seen corresponding path program 1 times [2020-10-23 20:26:05,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:05,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404049253] [2020-10-23 20:26:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:05,139 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:05,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:05,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:26:05,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404049253] [2020-10-23 20:26:05,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:05,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:26:05,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41185523] [2020-10-23 20:26:05,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:26:05,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:05,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:26:05,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:26:05,664 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 6 states. [2020-10-23 20:26:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:06,141 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-10-23 20:26:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:26:06,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-23 20:26:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:06,155 INFO L225 Difference]: With dead ends: 66 [2020-10-23 20:26:06,155 INFO L226 Difference]: Without dead ends: 44 [2020-10-23 20:26:06,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:26:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-23 20:26:06,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-23 20:26:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-23 20:26:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-23 20:26:06,222 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 31 [2020-10-23 20:26:06,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:06,223 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-23 20:26:06,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:26:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-23 20:26:06,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-23 20:26:06,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:06,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:06,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:26:06,247 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:06,248 INFO L82 PathProgramCache]: Analyzing trace with hash 521128098, now seen corresponding path program 1 times [2020-10-23 20:26:06,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:06,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502043000] [2020-10-23 20:26:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:06,255 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:26:06,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502043000] [2020-10-23 20:26:06,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:06,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:26:06,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915843275] [2020-10-23 20:26:06,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:26:06,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:06,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:26:06,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:26:06,399 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 5 states. [2020-10-23 20:26:06,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:06,621 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-10-23 20:26:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:26:06,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-23 20:26:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:06,624 INFO L225 Difference]: With dead ends: 61 [2020-10-23 20:26:06,624 INFO L226 Difference]: Without dead ends: 46 [2020-10-23 20:26:06,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:26:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-23 20:26:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-23 20:26:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-23 20:26:06,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-23 20:26:06,645 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 32 [2020-10-23 20:26:06,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:06,645 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-23 20:26:06,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:26:06,646 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-23 20:26:06,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 20:26:06,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:06,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:06,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:26:06,649 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:06,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:06,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1532374569, now seen corresponding path program 1 times [2020-10-23 20:26:06,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:06,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129457831] [2020-10-23 20:26:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:06,653 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:06,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:06,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:06,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-23 20:26:06,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129457831] [2020-10-23 20:26:06,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:06,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:26:06,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602250138] [2020-10-23 20:26:06,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:26:06,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:06,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:26:06,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:26:06,855 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 7 states. [2020-10-23 20:26:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:07,381 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-10-23 20:26:07,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:26:07,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-23 20:26:07,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:07,384 INFO L225 Difference]: With dead ends: 56 [2020-10-23 20:26:07,384 INFO L226 Difference]: Without dead ends: 49 [2020-10-23 20:26:07,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:26:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-23 20:26:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-23 20:26:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-23 20:26:07,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-23 20:26:07,405 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 41 [2020-10-23 20:26:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:07,406 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-23 20:26:07,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:26:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-23 20:26:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-23 20:26:07,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:07,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:07,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:26:07,410 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:07,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1541604007, now seen corresponding path program 2 times [2020-10-23 20:26:07,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:07,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004202159] [2020-10-23 20:26:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:07,415 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:07,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:07,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-23 20:26:07,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004202159] [2020-10-23 20:26:07,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:07,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:26:07,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966729647] [2020-10-23 20:26:07,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:26:07,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:07,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:26:07,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:26:07,611 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 8 states. [2020-10-23 20:26:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:08,201 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2020-10-23 20:26:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:26:08,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-23 20:26:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:08,204 INFO L225 Difference]: With dead ends: 76 [2020-10-23 20:26:08,204 INFO L226 Difference]: Without dead ends: 69 [2020-10-23 20:26:08,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:26:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-23 20:26:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-23 20:26:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-23 20:26:08,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2020-10-23 20:26:08,229 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 51 [2020-10-23 20:26:08,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:08,229 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2020-10-23 20:26:08,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:26:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2020-10-23 20:26:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-23 20:26:08,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:08,233 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:08,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:26:08,233 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:08,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1542251497, now seen corresponding path program 3 times [2020-10-23 20:26:08,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:08,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252362168] [2020-10-23 20:26:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:08,238 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:08,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:08,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:08,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-23 20:26:08,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252362168] [2020-10-23 20:26:08,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:08,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 20:26:08,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434084253] [2020-10-23 20:26:08,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 20:26:08,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:08,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 20:26:08,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:26:08,553 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand 9 states. [2020-10-23 20:26:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:09,254 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2020-10-23 20:26:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:26:09,256 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-23 20:26:09,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:09,260 INFO L225 Difference]: With dead ends: 81 [2020-10-23 20:26:09,260 INFO L226 Difference]: Without dead ends: 74 [2020-10-23 20:26:09,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:26:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-23 20:26:09,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-23 20:26:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-23 20:26:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-10-23 20:26:09,286 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 61 [2020-10-23 20:26:09,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:09,286 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-10-23 20:26:09,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 20:26:09,287 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-10-23 20:26:09,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-23 20:26:09,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:09,289 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:09,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:26:09,290 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:09,291 INFO L82 PathProgramCache]: Analyzing trace with hash -504999193, now seen corresponding path program 4 times [2020-10-23 20:26:09,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:09,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314888143] [2020-10-23 20:26:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:09,295 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:09,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:09,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:09,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:09,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:09,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:09,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-23 20:26:09,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314888143] [2020-10-23 20:26:09,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:09,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:26:09,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957254681] [2020-10-23 20:26:09,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:26:09,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:09,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:26:09,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:26:09,549 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 10 states. [2020-10-23 20:26:10,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:10,271 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2020-10-23 20:26:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:26:10,272 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-23 20:26:10,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:10,274 INFO L225 Difference]: With dead ends: 86 [2020-10-23 20:26:10,274 INFO L226 Difference]: Without dead ends: 79 [2020-10-23 20:26:10,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:26:10,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-23 20:26:10,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-23 20:26:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-23 20:26:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2020-10-23 20:26:10,317 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 71 [2020-10-23 20:26:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:10,318 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2020-10-23 20:26:10,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:26:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2020-10-23 20:26:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-23 20:26:10,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:10,326 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:10,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:26:10,326 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:10,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1878087255, now seen corresponding path program 5 times [2020-10-23 20:26:10,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:10,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508336014] [2020-10-23 20:26:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:10,333 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:10,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:10,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:10,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:10,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-23 20:26:10,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508336014] [2020-10-23 20:26:10,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:10,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:26:10,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173889666] [2020-10-23 20:26:10,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:26:10,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:10,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:26:10,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:26:10,710 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand 11 states. [2020-10-23 20:26:11,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:11,413 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2020-10-23 20:26:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 20:26:11,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 81 [2020-10-23 20:26:11,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:11,416 INFO L225 Difference]: With dead ends: 91 [2020-10-23 20:26:11,419 INFO L226 Difference]: Without dead ends: 84 [2020-10-23 20:26:11,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:26:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-23 20:26:11,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-23 20:26:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-23 20:26:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2020-10-23 20:26:11,459 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 81 [2020-10-23 20:26:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:11,459 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2020-10-23 20:26:11,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:26:11,460 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2020-10-23 20:26:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-23 20:26:11,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:11,461 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:11,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:26:11,462 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:11,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:11,462 INFO L82 PathProgramCache]: Analyzing trace with hash 658871079, now seen corresponding path program 6 times [2020-10-23 20:26:11,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:11,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019201215] [2020-10-23 20:26:11,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:11,468 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:11,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:11,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:11,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:11,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:11,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:11,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-23 20:26:11,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019201215] [2020-10-23 20:26:11,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:11,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:26:11,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575819640] [2020-10-23 20:26:11,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:26:11,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:11,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:26:11,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:26:11,790 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand 12 states. [2020-10-23 20:26:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:12,628 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2020-10-23 20:26:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 20:26:12,629 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-10-23 20:26:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:12,630 INFO L225 Difference]: With dead ends: 96 [2020-10-23 20:26:12,631 INFO L226 Difference]: Without dead ends: 89 [2020-10-23 20:26:12,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:26:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-23 20:26:12,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-23 20:26:12,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-23 20:26:12,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2020-10-23 20:26:12,652 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 91 [2020-10-23 20:26:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:12,653 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2020-10-23 20:26:12,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:26:12,653 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2020-10-23 20:26:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-23 20:26:12,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:12,655 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:12,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:26:12,655 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:12,656 INFO L82 PathProgramCache]: Analyzing trace with hash -553156759, now seen corresponding path program 7 times [2020-10-23 20:26:12,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:12,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950082201] [2020-10-23 20:26:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:12,662 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:12,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:12,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:12,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:12,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:12,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:12,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:12,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:12,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-23 20:26:13,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950082201] [2020-10-23 20:26:13,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:13,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:26:13,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954026343] [2020-10-23 20:26:13,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:26:13,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:13,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:26:13,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:26:13,016 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand 13 states. [2020-10-23 20:26:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:13,942 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-10-23 20:26:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:26:13,943 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2020-10-23 20:26:13,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:13,945 INFO L225 Difference]: With dead ends: 101 [2020-10-23 20:26:13,945 INFO L226 Difference]: Without dead ends: 94 [2020-10-23 20:26:13,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-23 20:26:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-23 20:26:13,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-10-23 20:26:13,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-23 20:26:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2020-10-23 20:26:13,985 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 101 [2020-10-23 20:26:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:13,987 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2020-10-23 20:26:13,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:26:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2020-10-23 20:26:13,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-23 20:26:13,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:13,991 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:13,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:26:13,992 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:13,992 INFO L82 PathProgramCache]: Analyzing trace with hash -743128217, now seen corresponding path program 8 times [2020-10-23 20:26:13,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:13,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697444242] [2020-10-23 20:26:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:14,002 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-10-23 20:26:14,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697444242] [2020-10-23 20:26:14,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:14,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:26:14,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635688409] [2020-10-23 20:26:14,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:26:14,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:14,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:26:14,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:26:14,476 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand 14 states. [2020-10-23 20:26:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:15,407 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2020-10-23 20:26:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:26:15,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 111 [2020-10-23 20:26:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:15,412 INFO L225 Difference]: With dead ends: 106 [2020-10-23 20:26:15,413 INFO L226 Difference]: Without dead ends: 99 [2020-10-23 20:26:15,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-23 20:26:15,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-23 20:26:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-23 20:26:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-23 20:26:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2020-10-23 20:26:15,453 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 111 [2020-10-23 20:26:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:15,453 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2020-10-23 20:26:15,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:26:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2020-10-23 20:26:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-23 20:26:15,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:15,459 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:15,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:26:15,459 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:15,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:15,460 INFO L82 PathProgramCache]: Analyzing trace with hash -786209495, now seen corresponding path program 9 times [2020-10-23 20:26:15,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:15,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146499210] [2020-10-23 20:26:15,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:15,471 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-23 20:26:15,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146499210] [2020-10-23 20:26:15,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:15,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:26:15,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312773334] [2020-10-23 20:26:15,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:26:15,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:15,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:26:15,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:26:15,968 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 15 states. [2020-10-23 20:26:16,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:16,977 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-10-23 20:26:16,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 20:26:16,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 121 [2020-10-23 20:26:16,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:16,979 INFO L225 Difference]: With dead ends: 111 [2020-10-23 20:26:16,979 INFO L226 Difference]: Without dead ends: 104 [2020-10-23 20:26:16,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=553, Unknown=0, NotChecked=0, Total=812 [2020-10-23 20:26:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-23 20:26:16,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-23 20:26:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-23 20:26:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2020-10-23 20:26:16,999 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 121 [2020-10-23 20:26:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:16,999 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2020-10-23 20:26:17,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:26:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2020-10-23 20:26:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-23 20:26:17,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:17,002 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:17,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 20:26:17,002 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash -840440921, now seen corresponding path program 10 times [2020-10-23 20:26:17,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:17,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914505753] [2020-10-23 20:26:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:17,011 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-23 20:26:17,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914505753] [2020-10-23 20:26:17,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:17,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 20:26:17,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173801886] [2020-10-23 20:26:17,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 20:26:17,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:17,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 20:26:17,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:26:17,635 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand 16 states. [2020-10-23 20:26:18,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:18,696 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-10-23 20:26:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 20:26:18,697 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 131 [2020-10-23 20:26:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:18,699 INFO L225 Difference]: With dead ends: 116 [2020-10-23 20:26:18,699 INFO L226 Difference]: Without dead ends: 109 [2020-10-23 20:26:18,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=299, Invalid=631, Unknown=0, NotChecked=0, Total=930 [2020-10-23 20:26:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-23 20:26:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-23 20:26:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-23 20:26:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2020-10-23 20:26:18,723 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 131 [2020-10-23 20:26:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:18,723 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2020-10-23 20:26:18,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 20:26:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2020-10-23 20:26:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-23 20:26:18,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:18,726 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:18,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-23 20:26:18,726 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:18,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1336826601, now seen corresponding path program 11 times [2020-10-23 20:26:18,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:18,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398502724] [2020-10-23 20:26:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:18,737 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:18,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:18,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:18,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:18,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-10-23 20:26:19,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398502724] [2020-10-23 20:26:19,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:19,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-23 20:26:19,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274638973] [2020-10-23 20:26:19,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-23 20:26:19,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:19,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-23 20:26:19,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:26:19,407 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand 17 states. [2020-10-23 20:26:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:20,433 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-10-23 20:26:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:26:20,434 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 141 [2020-10-23 20:26:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:20,436 INFO L225 Difference]: With dead ends: 121 [2020-10-23 20:26:20,436 INFO L226 Difference]: Without dead ends: 114 [2020-10-23 20:26:20,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=342, Invalid=714, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 20:26:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-23 20:26:20,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-10-23 20:26:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-23 20:26:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2020-10-23 20:26:20,462 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 141 [2020-10-23 20:26:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:20,463 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2020-10-23 20:26:20,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-23 20:26:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2020-10-23 20:26:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-23 20:26:20,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:20,466 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:20,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-23 20:26:20,466 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:20,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:20,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2073228263, now seen corresponding path program 12 times [2020-10-23 20:26:20,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:20,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048064020] [2020-10-23 20:26:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:20,496 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:21,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2020-10-23 20:26:21,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048064020] [2020-10-23 20:26:21,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:21,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-23 20:26:21,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090374346] [2020-10-23 20:26:21,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-23 20:26:21,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:21,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-23 20:26:21,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-10-23 20:26:21,226 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 18 states. [2020-10-23 20:26:22,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:22,412 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-10-23 20:26:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:26:22,413 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 151 [2020-10-23 20:26:22,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:22,415 INFO L225 Difference]: With dead ends: 126 [2020-10-23 20:26:22,416 INFO L226 Difference]: Without dead ends: 119 [2020-10-23 20:26:22,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=388, Invalid=802, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 20:26:22,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-23 20:26:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-10-23 20:26:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-23 20:26:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2020-10-23 20:26:22,440 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 151 [2020-10-23 20:26:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:22,441 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2020-10-23 20:26:22,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-23 20:26:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2020-10-23 20:26:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-23 20:26:22,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:22,444 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:22,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-23 20:26:22,445 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:22,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:22,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1693737129, now seen corresponding path program 13 times [2020-10-23 20:26:22,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:22,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635741406] [2020-10-23 20:26:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:22,451 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:22,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:23,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2020-10-23 20:26:23,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635741406] [2020-10-23 20:26:23,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:23,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-23 20:26:23,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703711858] [2020-10-23 20:26:23,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-23 20:26:23,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:23,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-23 20:26:23,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:26:23,261 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand 19 states. [2020-10-23 20:26:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:24,517 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2020-10-23 20:26:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 20:26:24,518 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 161 [2020-10-23 20:26:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:24,520 INFO L225 Difference]: With dead ends: 131 [2020-10-23 20:26:24,520 INFO L226 Difference]: Without dead ends: 124 [2020-10-23 20:26:24,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=437, Invalid=895, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 20:26:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-23 20:26:24,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-23 20:26:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-23 20:26:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2020-10-23 20:26:24,539 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 161 [2020-10-23 20:26:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:24,540 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2020-10-23 20:26:24,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-23 20:26:24,540 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2020-10-23 20:26:24,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-23 20:26:24,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:24,543 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:24,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-23 20:26:24,543 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:24,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:24,543 INFO L82 PathProgramCache]: Analyzing trace with hash 23720999, now seen corresponding path program 14 times [2020-10-23 20:26:24,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:24,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515939857] [2020-10-23 20:26:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:24,549 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:24,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:24,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:24,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:24,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:24,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:24,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:24,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:24,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:25,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:25,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:25,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:25,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2020-10-23 20:26:25,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515939857] [2020-10-23 20:26:25,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:25,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-23 20:26:25,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607286890] [2020-10-23 20:26:25,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-23 20:26:25,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-23 20:26:25,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2020-10-23 20:26:25,436 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand 20 states. [2020-10-23 20:26:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:26,758 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-10-23 20:26:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 20:26:26,759 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 171 [2020-10-23 20:26:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:26,761 INFO L225 Difference]: With dead ends: 136 [2020-10-23 20:26:26,762 INFO L226 Difference]: Without dead ends: 129 [2020-10-23 20:26:26,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=489, Invalid=993, Unknown=0, NotChecked=0, Total=1482 [2020-10-23 20:26:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-23 20:26:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-10-23 20:26:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-23 20:26:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2020-10-23 20:26:26,782 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 171 [2020-10-23 20:26:26,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:26,782 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2020-10-23 20:26:26,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-23 20:26:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2020-10-23 20:26:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-23 20:26:26,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:26,785 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:26,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-23 20:26:26,786 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash -62818711, now seen corresponding path program 15 times [2020-10-23 20:26:26,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:26,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562231212] [2020-10-23 20:26:26,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:26,792 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:26,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:26,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2020-10-23 20:26:27,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562231212] [2020-10-23 20:26:27,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:27,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-23 20:26:27,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253998694] [2020-10-23 20:26:27,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-23 20:26:27,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:27,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-23 20:26:27,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:26:27,809 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand 21 states. [2020-10-23 20:26:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:29,189 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2020-10-23 20:26:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 20:26:29,190 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 181 [2020-10-23 20:26:29,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:29,192 INFO L225 Difference]: With dead ends: 141 [2020-10-23 20:26:29,192 INFO L226 Difference]: Without dead ends: 134 [2020-10-23 20:26:29,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=544, Invalid=1096, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 20:26:29,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-23 20:26:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-23 20:26:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-23 20:26:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 148 transitions. [2020-10-23 20:26:29,215 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 148 transitions. Word has length 181 [2020-10-23 20:26:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:29,215 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 148 transitions. [2020-10-23 20:26:29,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-23 20:26:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 148 transitions. [2020-10-23 20:26:29,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-23 20:26:29,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:29,218 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:29,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-23 20:26:29,219 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:29,219 INFO L82 PathProgramCache]: Analyzing trace with hash -2094996377, now seen corresponding path program 16 times [2020-10-23 20:26:29,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:29,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951437400] [2020-10-23 20:26:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:29,229 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:29,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:30,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:30,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-23 20:26:30,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951437400] [2020-10-23 20:26:30,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:30,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-10-23 20:26:30,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548472293] [2020-10-23 20:26:30,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-23 20:26:30,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:30,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-23 20:26:30,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2020-10-23 20:26:30,369 INFO L87 Difference]: Start difference. First operand 134 states and 148 transitions. Second operand 22 states. [2020-10-23 20:26:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:31,850 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2020-10-23 20:26:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 20:26:31,854 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 191 [2020-10-23 20:26:31,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:31,857 INFO L225 Difference]: With dead ends: 146 [2020-10-23 20:26:31,857 INFO L226 Difference]: Without dead ends: 139 [2020-10-23 20:26:31,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=602, Invalid=1204, Unknown=0, NotChecked=0, Total=1806 [2020-10-23 20:26:31,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-23 20:26:31,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-10-23 20:26:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-23 20:26:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2020-10-23 20:26:31,880 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 191 [2020-10-23 20:26:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:31,881 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2020-10-23 20:26:31,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-23 20:26:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2020-10-23 20:26:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-23 20:26:31,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:31,884 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:31,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-23 20:26:31,884 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:31,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1579049943, now seen corresponding path program 17 times [2020-10-23 20:26:31,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:31,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681305735] [2020-10-23 20:26:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:31,891 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2020-10-23 20:26:33,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681305735] [2020-10-23 20:26:33,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:33,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-10-23 20:26:33,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960025384] [2020-10-23 20:26:33,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-23 20:26:33,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:33,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-23 20:26:33,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:26:33,121 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand 23 states. [2020-10-23 20:26:34,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:34,587 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2020-10-23 20:26:34,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-23 20:26:34,588 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 201 [2020-10-23 20:26:34,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:34,590 INFO L225 Difference]: With dead ends: 151 [2020-10-23 20:26:34,590 INFO L226 Difference]: Without dead ends: 144 [2020-10-23 20:26:34,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=663, Invalid=1317, Unknown=0, NotChecked=0, Total=1980 [2020-10-23 20:26:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-23 20:26:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-23 20:26:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-23 20:26:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 158 transitions. [2020-10-23 20:26:34,615 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 158 transitions. Word has length 201 [2020-10-23 20:26:34,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:34,615 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 158 transitions. [2020-10-23 20:26:34,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-23 20:26:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 158 transitions. [2020-10-23 20:26:34,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-23 20:26:34,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:34,619 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:34,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-23 20:26:34,619 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:34,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:34,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1668007079, now seen corresponding path program 18 times [2020-10-23 20:26:34,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:34,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014846160] [2020-10-23 20:26:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:34,626 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:34,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:34,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:34,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:34,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:34,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:34,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2020-10-23 20:26:35,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014846160] [2020-10-23 20:26:35,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:35,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-10-23 20:26:35,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138855910] [2020-10-23 20:26:35,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-23 20:26:35,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:35,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-23 20:26:35,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:26:35,871 INFO L87 Difference]: Start difference. First operand 144 states and 158 transitions. Second operand 24 states. [2020-10-23 20:26:37,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:37,445 INFO L93 Difference]: Finished difference Result 156 states and 170 transitions. [2020-10-23 20:26:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 20:26:37,446 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 211 [2020-10-23 20:26:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:37,448 INFO L225 Difference]: With dead ends: 156 [2020-10-23 20:26:37,448 INFO L226 Difference]: Without dead ends: 149 [2020-10-23 20:26:37,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=727, Invalid=1435, Unknown=0, NotChecked=0, Total=2162 [2020-10-23 20:26:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-23 20:26:37,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-10-23 20:26:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-23 20:26:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2020-10-23 20:26:37,478 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 211 [2020-10-23 20:26:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:37,478 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2020-10-23 20:26:37,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-23 20:26:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2020-10-23 20:26:37,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-23 20:26:37,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:37,482 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:37,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-23 20:26:37,482 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1126224361, now seen corresponding path program 19 times [2020-10-23 20:26:37,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:37,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941442996] [2020-10-23 20:26:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:37,491 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:37,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:37,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:37,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:37,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2020-10-23 20:26:38,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941442996] [2020-10-23 20:26:38,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:38,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-10-23 20:26:38,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266848632] [2020-10-23 20:26:38,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-23 20:26:38,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-23 20:26:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2020-10-23 20:26:38,847 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 25 states. [2020-10-23 20:26:40,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:40,555 INFO L93 Difference]: Finished difference Result 161 states and 175 transitions. [2020-10-23 20:26:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 20:26:40,556 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 221 [2020-10-23 20:26:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:40,558 INFO L225 Difference]: With dead ends: 161 [2020-10-23 20:26:40,558 INFO L226 Difference]: Without dead ends: 154 [2020-10-23 20:26:40,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=794, Invalid=1558, Unknown=0, NotChecked=0, Total=2352 [2020-10-23 20:26:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-23 20:26:40,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-23 20:26:40,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-23 20:26:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 168 transitions. [2020-10-23 20:26:40,579 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 168 transitions. Word has length 221 [2020-10-23 20:26:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:40,579 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 168 transitions. [2020-10-23 20:26:40,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-23 20:26:40,580 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 168 transitions. [2020-10-23 20:26:40,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-23 20:26:40,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:40,581 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:40,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-23 20:26:40,581 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:40,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:40,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2080467737, now seen corresponding path program 20 times [2020-10-23 20:26:40,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:40,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436210841] [2020-10-23 20:26:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:40,587 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:40,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:40,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:40,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:40,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:40,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:41,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2020-10-23 20:26:42,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436210841] [2020-10-23 20:26:42,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:42,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-10-23 20:26:42,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629942347] [2020-10-23 20:26:42,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-23 20:26:42,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-23 20:26:42,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2020-10-23 20:26:42,100 INFO L87 Difference]: Start difference. First operand 154 states and 168 transitions. Second operand 26 states. [2020-10-23 20:26:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:43,865 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2020-10-23 20:26:43,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:26:43,868 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 231 [2020-10-23 20:26:43,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:43,870 INFO L225 Difference]: With dead ends: 166 [2020-10-23 20:26:43,870 INFO L226 Difference]: Without dead ends: 159 [2020-10-23 20:26:43,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=864, Invalid=1686, Unknown=0, NotChecked=0, Total=2550 [2020-10-23 20:26:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-23 20:26:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-10-23 20:26:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-23 20:26:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 173 transitions. [2020-10-23 20:26:43,895 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 173 transitions. Word has length 231 [2020-10-23 20:26:43,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:43,896 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 173 transitions. [2020-10-23 20:26:43,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-23 20:26:43,896 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 173 transitions. [2020-10-23 20:26:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-23 20:26:43,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:43,898 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:43,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-23 20:26:43,898 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:43,899 INFO L82 PathProgramCache]: Analyzing trace with hash -297068631, now seen corresponding path program 21 times [2020-10-23 20:26:43,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:43,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19970262] [2020-10-23 20:26:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:43,905 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:44,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:45,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:45,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2020-10-23 20:26:45,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19970262] [2020-10-23 20:26:45,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:45,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-10-23 20:26:45,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966682945] [2020-10-23 20:26:45,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-23 20:26:45,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:45,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-23 20:26:45,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=420, Unknown=0, NotChecked=0, Total=702 [2020-10-23 20:26:45,402 INFO L87 Difference]: Start difference. First operand 159 states and 173 transitions. Second operand 27 states. [2020-10-23 20:26:47,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:47,254 INFO L93 Difference]: Finished difference Result 171 states and 185 transitions. [2020-10-23 20:26:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-23 20:26:47,255 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 241 [2020-10-23 20:26:47,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:47,257 INFO L225 Difference]: With dead ends: 171 [2020-10-23 20:26:47,257 INFO L226 Difference]: Without dead ends: 164 [2020-10-23 20:26:47,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=937, Invalid=1819, Unknown=0, NotChecked=0, Total=2756 [2020-10-23 20:26:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-23 20:26:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-23 20:26:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-23 20:26:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 178 transitions. [2020-10-23 20:26:47,282 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 178 transitions. Word has length 241 [2020-10-23 20:26:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:47,283 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 178 transitions. [2020-10-23 20:26:47,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-23 20:26:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 178 transitions. [2020-10-23 20:26:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-23 20:26:47,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:47,285 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:47,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-23 20:26:47,286 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:47,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:47,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2054335193, now seen corresponding path program 22 times [2020-10-23 20:26:47,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:47,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923085675] [2020-10-23 20:26:47,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:47,291 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:47,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2020-10-23 20:26:48,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923085675] [2020-10-23 20:26:48,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:48,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-10-23 20:26:48,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994242126] [2020-10-23 20:26:48,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-23 20:26:48,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:48,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-23 20:26:48,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:26:48,971 INFO L87 Difference]: Start difference. First operand 164 states and 178 transitions. Second operand 28 states. [2020-10-23 20:26:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:50,842 INFO L93 Difference]: Finished difference Result 176 states and 190 transitions. [2020-10-23 20:26:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-23 20:26:50,843 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 251 [2020-10-23 20:26:50,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:50,845 INFO L225 Difference]: With dead ends: 176 [2020-10-23 20:26:50,845 INFO L226 Difference]: Without dead ends: 169 [2020-10-23 20:26:50,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1013, Invalid=1957, Unknown=0, NotChecked=0, Total=2970 [2020-10-23 20:26:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-23 20:26:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2020-10-23 20:26:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-23 20:26:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 183 transitions. [2020-10-23 20:26:50,869 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 183 transitions. Word has length 251 [2020-10-23 20:26:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:50,870 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 183 transitions. [2020-10-23 20:26:50,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-23 20:26:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 183 transitions. [2020-10-23 20:26:50,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-23 20:26:50,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:50,872 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:50,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-23 20:26:50,872 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:50,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:50,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1834193559, now seen corresponding path program 23 times [2020-10-23 20:26:50,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:50,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927392544] [2020-10-23 20:26:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:50,878 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:50,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:50,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:52,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:52,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:52,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:52,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2020-10-23 20:26:52,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927392544] [2020-10-23 20:26:52,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:52,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-10-23 20:26:52,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194673351] [2020-10-23 20:26:52,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-23 20:26:52,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:52,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-23 20:26:52,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=481, Unknown=0, NotChecked=0, Total=812 [2020-10-23 20:26:52,617 INFO L87 Difference]: Start difference. First operand 169 states and 183 transitions. Second operand 29 states. [2020-10-23 20:26:54,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:54,548 INFO L93 Difference]: Finished difference Result 181 states and 195 transitions. [2020-10-23 20:26:54,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-23 20:26:54,548 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 261 [2020-10-23 20:26:54,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:54,550 INFO L225 Difference]: With dead ends: 181 [2020-10-23 20:26:54,550 INFO L226 Difference]: Without dead ends: 174 [2020-10-23 20:26:54,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1092, Invalid=2100, Unknown=0, NotChecked=0, Total=3192 [2020-10-23 20:26:54,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-23 20:26:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-23 20:26:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-23 20:26:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 188 transitions. [2020-10-23 20:26:54,579 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 188 transitions. Word has length 261 [2020-10-23 20:26:54,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:54,580 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 188 transitions. [2020-10-23 20:26:54,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-23 20:26:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 188 transitions. [2020-10-23 20:26:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-23 20:26:54,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:54,582 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:54,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-23 20:26:54,583 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:54,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:54,583 INFO L82 PathProgramCache]: Analyzing trace with hash 130811239, now seen corresponding path program 24 times [2020-10-23 20:26:54,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:54,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330844869] [2020-10-23 20:26:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:54,589 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:54,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:54,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:54,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:56,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:56,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2020-10-23 20:26:56,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330844869] [2020-10-23 20:26:56,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:56,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2020-10-23 20:26:56,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114492791] [2020-10-23 20:26:56,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-23 20:26:56,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:56,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-23 20:26:56,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=513, Unknown=0, NotChecked=0, Total=870 [2020-10-23 20:26:56,550 INFO L87 Difference]: Start difference. First operand 174 states and 188 transitions. Second operand 30 states. [2020-10-23 20:26:58,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:58,618 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2020-10-23 20:26:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-23 20:26:58,618 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 271 [2020-10-23 20:26:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:58,624 INFO L225 Difference]: With dead ends: 186 [2020-10-23 20:26:58,624 INFO L226 Difference]: Without dead ends: 179 [2020-10-23 20:26:58,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1174, Invalid=2248, Unknown=0, NotChecked=0, Total=3422 [2020-10-23 20:26:58,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-23 20:26:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-23 20:26:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-23 20:26:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 193 transitions. [2020-10-23 20:26:58,648 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 193 transitions. Word has length 271 [2020-10-23 20:26:58,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:58,649 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 193 transitions. [2020-10-23 20:26:58,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-23 20:26:58,649 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 193 transitions. [2020-10-23 20:26:58,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-23 20:26:58,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:58,651 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:58,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-23 20:26:58,652 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:58,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1064250583, now seen corresponding path program 25 times [2020-10-23 20:26:58,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:58,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942177604] [2020-10-23 20:26:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:58,657 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:58,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:58,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:58,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:26:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:00,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:00,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:00,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:00,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1575 trivial. 0 not checked. [2020-10-23 20:27:00,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942177604] [2020-10-23 20:27:00,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:00,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-10-23 20:27:00,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256035829] [2020-10-23 20:27:00,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-23 20:27:00,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:00,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-23 20:27:00,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=546, Unknown=0, NotChecked=0, Total=930 [2020-10-23 20:27:00,895 INFO L87 Difference]: Start difference. First operand 179 states and 193 transitions. Second operand 31 states. [2020-10-23 20:27:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:03,021 INFO L93 Difference]: Finished difference Result 191 states and 205 transitions. [2020-10-23 20:27:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-23 20:27:03,022 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 281 [2020-10-23 20:27:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:03,025 INFO L225 Difference]: With dead ends: 191 [2020-10-23 20:27:03,025 INFO L226 Difference]: Without dead ends: 184 [2020-10-23 20:27:03,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1259, Invalid=2401, Unknown=0, NotChecked=0, Total=3660 [2020-10-23 20:27:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-23 20:27:03,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2020-10-23 20:27:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-23 20:27:03,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 198 transitions. [2020-10-23 20:27:03,052 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 198 transitions. Word has length 281 [2020-10-23 20:27:03,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:03,052 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 198 transitions. [2020-10-23 20:27:03,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-23 20:27:03,053 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 198 transitions. [2020-10-23 20:27:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-23 20:27:03,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:03,055 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 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, 1, 1, 1, 1, 1] [2020-10-23 20:27:03,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-23 20:27:03,055 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:03,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:03,056 INFO L82 PathProgramCache]: Analyzing trace with hash -378624601, now seen corresponding path program 26 times [2020-10-23 20:27:03,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:03,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096311565] [2020-10-23 20:27:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:03,061 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:27:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:04,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1703 trivial. 0 not checked. [2020-10-23 20:27:05,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096311565] [2020-10-23 20:27:05,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:05,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-10-23 20:27:05,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396162091] [2020-10-23 20:27:05,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-23 20:27:05,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:05,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-23 20:27:05,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=580, Unknown=0, NotChecked=0, Total=992 [2020-10-23 20:27:05,420 INFO L87 Difference]: Start difference. First operand 184 states and 198 transitions. Second operand 32 states. [2020-10-23 20:27:07,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:07,652 INFO L93 Difference]: Finished difference Result 196 states and 210 transitions. [2020-10-23 20:27:07,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-23 20:27:07,657 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 291 [2020-10-23 20:27:07,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:07,659 INFO L225 Difference]: With dead ends: 196 [2020-10-23 20:27:07,659 INFO L226 Difference]: Without dead ends: 189 [2020-10-23 20:27:07,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1347, Invalid=2559, Unknown=0, NotChecked=0, Total=3906 [2020-10-23 20:27:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-23 20:27:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2020-10-23 20:27:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-23 20:27:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 203 transitions. [2020-10-23 20:27:07,686 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 203 transitions. Word has length 291 [2020-10-23 20:27:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:07,687 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 203 transitions. [2020-10-23 20:27:07,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-23 20:27:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 203 transitions. [2020-10-23 20:27:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-23 20:27:07,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:07,690 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 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, 1, 1, 1, 1, 1] [2020-10-23 20:27:07,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-23 20:27:07,690 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:07,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:07,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1766082793, now seen corresponding path program 27 times [2020-10-23 20:27:07,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:07,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097957806] [2020-10-23 20:27:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:07,696 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:07,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:27:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:07,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:08,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:09,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:09,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:09,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1836 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2020-10-23 20:27:10,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097957806] [2020-10-23 20:27:10,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:10,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-10-23 20:27:10,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113260088] [2020-10-23 20:27:10,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-23 20:27:10,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:10,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-23 20:27:10,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=615, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 20:27:10,045 INFO L87 Difference]: Start difference. First operand 189 states and 203 transitions. Second operand 33 states. [2020-10-23 20:27:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:12,302 INFO L93 Difference]: Finished difference Result 201 states and 215 transitions. [2020-10-23 20:27:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-23 20:27:12,303 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 301 [2020-10-23 20:27:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:12,305 INFO L225 Difference]: With dead ends: 201 [2020-10-23 20:27:12,305 INFO L226 Difference]: Without dead ends: 194 [2020-10-23 20:27:12,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1438, Invalid=2722, Unknown=0, NotChecked=0, Total=4160 [2020-10-23 20:27:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-23 20:27:12,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-23 20:27:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-23 20:27:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 208 transitions. [2020-10-23 20:27:12,333 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 208 transitions. Word has length 301 [2020-10-23 20:27:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:12,334 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 208 transitions. [2020-10-23 20:27:12,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-23 20:27:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 208 transitions. [2020-10-23 20:27:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-23 20:27:12,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:12,336 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 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, 1, 1, 1, 1, 1] [2020-10-23 20:27:12,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-23 20:27:12,337 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2010565145, now seen corresponding path program 28 times [2020-10-23 20:27:12,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:12,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865046494] [2020-10-23 20:27:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:12,343 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:12,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:27:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:12,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:12,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:12,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:12,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:12,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:13,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:14,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1974 trivial. 0 not checked. [2020-10-23 20:27:14,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865046494] [2020-10-23 20:27:14,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:14,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-10-23 20:27:14,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665100162] [2020-10-23 20:27:14,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-23 20:27:14,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:14,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-23 20:27:14,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=651, Unknown=0, NotChecked=0, Total=1122 [2020-10-23 20:27:14,732 INFO L87 Difference]: Start difference. First operand 194 states and 208 transitions. Second operand 34 states. [2020-10-23 20:27:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:17,170 INFO L93 Difference]: Finished difference Result 206 states and 220 transitions. [2020-10-23 20:27:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-23 20:27:17,171 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 311 [2020-10-23 20:27:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:17,173 INFO L225 Difference]: With dead ends: 206 [2020-10-23 20:27:17,173 INFO L226 Difference]: Without dead ends: 199 [2020-10-23 20:27:17,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1532, Invalid=2890, Unknown=0, NotChecked=0, Total=4422 [2020-10-23 20:27:17,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-23 20:27:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-10-23 20:27:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-23 20:27:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 213 transitions. [2020-10-23 20:27:17,204 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 213 transitions. Word has length 311 [2020-10-23 20:27:17,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:17,205 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 213 transitions. [2020-10-23 20:27:17,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-23 20:27:17,205 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 213 transitions. [2020-10-23 20:27:17,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-23 20:27:17,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:17,208 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 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, 1, 1, 1, 1, 1] [2020-10-23 20:27:17,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-23 20:27:17,208 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:17,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:17,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1626157399, now seen corresponding path program 29 times [2020-10-23 20:27:17,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:17,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113628513] [2020-10-23 20:27:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:17,215 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:27:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:17,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:17,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:17,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:17,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:18,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:19,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:19,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2020-10-23 20:27:20,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113628513] [2020-10-23 20:27:20,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:20,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-10-23 20:27:20,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561410395] [2020-10-23 20:27:20,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-23 20:27:20,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:20,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-23 20:27:20,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=688, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 20:27:20,061 INFO L87 Difference]: Start difference. First operand 199 states and 213 transitions. Second operand 35 states. [2020-10-23 20:27:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:22,578 INFO L93 Difference]: Finished difference Result 211 states and 225 transitions. [2020-10-23 20:27:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-23 20:27:22,579 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 321 [2020-10-23 20:27:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:22,581 INFO L225 Difference]: With dead ends: 211 [2020-10-23 20:27:22,582 INFO L226 Difference]: Without dead ends: 204 [2020-10-23 20:27:22,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1629, Invalid=3063, Unknown=0, NotChecked=0, Total=4692 [2020-10-23 20:27:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-23 20:27:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2020-10-23 20:27:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-23 20:27:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2020-10-23 20:27:22,610 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 321 [2020-10-23 20:27:22,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:22,611 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2020-10-23 20:27:22,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-23 20:27:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2020-10-23 20:27:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-23 20:27:22,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:22,613 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 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, 1, 1, 1, 1, 1] [2020-10-23 20:27:22,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-23 20:27:22,613 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:22,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash 11515431, now seen corresponding path program 30 times [2020-10-23 20:27:22,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:22,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302931214] [2020-10-23 20:27:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:22,620 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:22,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:22,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:27:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:22,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:22,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:23,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:24,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2020-10-23 20:27:25,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302931214] [2020-10-23 20:27:25,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:25,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-10-23 20:27:25,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160356656] [2020-10-23 20:27:25,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-23 20:27:25,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:25,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-23 20:27:25,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=726, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 20:27:25,624 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand 36 states. [2020-10-23 20:27:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:28,122 INFO L93 Difference]: Finished difference Result 216 states and 230 transitions. [2020-10-23 20:27:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-23 20:27:28,123 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 331 [2020-10-23 20:27:28,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:28,126 INFO L225 Difference]: With dead ends: 216 [2020-10-23 20:27:28,127 INFO L226 Difference]: Without dead ends: 209 [2020-10-23 20:27:28,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1729, Invalid=3241, Unknown=0, NotChecked=0, Total=4970 [2020-10-23 20:27:28,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-23 20:27:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-10-23 20:27:28,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-23 20:27:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 223 transitions. [2020-10-23 20:27:28,156 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 223 transitions. Word has length 331 [2020-10-23 20:27:28,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:28,156 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 223 transitions. [2020-10-23 20:27:28,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-23 20:27:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 223 transitions. [2020-10-23 20:27:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-23 20:27:28,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:28,159 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 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, 1, 1, 1, 1, 1] [2020-10-23 20:27:28,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-23 20:27:28,160 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:28,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1430807657, now seen corresponding path program 31 times [2020-10-23 20:27:28,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:28,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765745978] [2020-10-23 20:27:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:28,166 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:27:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:28,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:30,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:30,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2418 trivial. 0 not checked. [2020-10-23 20:27:31,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765745978] [2020-10-23 20:27:31,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:31,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-10-23 20:27:31,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680618852] [2020-10-23 20:27:31,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-23 20:27:31,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:31,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-23 20:27:31,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=765, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 20:27:31,179 INFO L87 Difference]: Start difference. First operand 209 states and 223 transitions. Second operand 37 states. [2020-10-23 20:27:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:33,816 INFO L93 Difference]: Finished difference Result 221 states and 235 transitions. [2020-10-23 20:27:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-23 20:27:33,817 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 341 [2020-10-23 20:27:33,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:33,820 INFO L225 Difference]: With dead ends: 221 [2020-10-23 20:27:33,820 INFO L226 Difference]: Without dead ends: 214 [2020-10-23 20:27:33,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1832, Invalid=3424, Unknown=0, NotChecked=0, Total=5256 [2020-10-23 20:27:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-23 20:27:33,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-23 20:27:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-23 20:27:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 228 transitions. [2020-10-23 20:27:33,851 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 228 transitions. Word has length 341 [2020-10-23 20:27:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:33,852 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 228 transitions. [2020-10-23 20:27:33,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-23 20:27:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 228 transitions. [2020-10-23 20:27:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-23 20:27:33,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:33,855 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 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, 1, 1, 1, 1, 1] [2020-10-23 20:27:33,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-23 20:27:33,855 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:33,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1857431143, now seen corresponding path program 32 times [2020-10-23 20:27:33,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:33,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229806169] [2020-10-23 20:27:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:33,861 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:27:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:34,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:35,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2576 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2576 trivial. 0 not checked. [2020-10-23 20:27:37,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229806169] [2020-10-23 20:27:37,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:37,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-10-23 20:27:37,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189294371] [2020-10-23 20:27:37,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-23 20:27:37,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:37,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-23 20:27:37,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=805, Unknown=0, NotChecked=0, Total=1406 [2020-10-23 20:27:37,311 INFO L87 Difference]: Start difference. First operand 214 states and 228 transitions. Second operand 38 states. [2020-10-23 20:27:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:40,006 INFO L93 Difference]: Finished difference Result 226 states and 240 transitions. [2020-10-23 20:27:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-23 20:27:40,007 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 351 [2020-10-23 20:27:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:40,009 INFO L225 Difference]: With dead ends: 226 [2020-10-23 20:27:40,009 INFO L226 Difference]: Without dead ends: 219 [2020-10-23 20:27:40,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1938, Invalid=3612, Unknown=0, NotChecked=0, Total=5550 [2020-10-23 20:27:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-23 20:27:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2020-10-23 20:27:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-23 20:27:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 233 transitions. [2020-10-23 20:27:40,038 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 233 transitions. Word has length 351 [2020-10-23 20:27:40,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:40,039 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 233 transitions. [2020-10-23 20:27:40,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-23 20:27:40,039 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 233 transitions. [2020-10-23 20:27:40,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-23 20:27:40,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:40,042 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 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, 1, 1, 1, 1, 1] [2020-10-23 20:27:40,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-23 20:27:40,042 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:40,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:40,043 INFO L82 PathProgramCache]: Analyzing trace with hash 540084777, now seen corresponding path program 33 times [2020-10-23 20:27:40,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:40,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468558166] [2020-10-23 20:27:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:40,050 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:27:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:42,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:42,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:42,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:42,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:42,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2739 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2020-10-23 20:27:43,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468558166] [2020-10-23 20:27:43,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:43,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-10-23 20:27:43,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225431719] [2020-10-23 20:27:43,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-23 20:27:43,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:43,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-23 20:27:43,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=846, Unknown=0, NotChecked=0, Total=1482 [2020-10-23 20:27:43,760 INFO L87 Difference]: Start difference. First operand 219 states and 233 transitions. Second operand 39 states. [2020-10-23 20:27:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:46,546 INFO L93 Difference]: Finished difference Result 231 states and 245 transitions. [2020-10-23 20:27:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-23 20:27:46,546 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 361 [2020-10-23 20:27:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:46,548 INFO L225 Difference]: With dead ends: 231 [2020-10-23 20:27:46,549 INFO L226 Difference]: Without dead ends: 224 [2020-10-23 20:27:46,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2047, Invalid=3805, Unknown=0, NotChecked=0, Total=5852 [2020-10-23 20:27:46,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-23 20:27:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-10-23 20:27:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-23 20:27:46,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 238 transitions. [2020-10-23 20:27:46,578 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 238 transitions. Word has length 361 [2020-10-23 20:27:46,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:46,578 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 238 transitions. [2020-10-23 20:27:46,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-23 20:27:46,579 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 238 transitions. [2020-10-23 20:27:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-23 20:27:46,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:46,581 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 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, 1, 1, 1, 1, 1] [2020-10-23 20:27:46,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-23 20:27:46,582 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:46,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:46,582 INFO L82 PathProgramCache]: Analyzing trace with hash 753960615, now seen corresponding path program 34 times [2020-10-23 20:27:46,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:46,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507545096] [2020-10-23 20:27:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:46,588 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:27:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:46,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:47,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:49,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:49,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2907 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2907 trivial. 0 not checked. [2020-10-23 20:27:50,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507545096] [2020-10-23 20:27:50,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:50,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2020-10-23 20:27:50,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270445759] [2020-10-23 20:27:50,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-23 20:27:50,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:50,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-23 20:27:50,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=888, Unknown=0, NotChecked=0, Total=1560 [2020-10-23 20:27:50,391 INFO L87 Difference]: Start difference. First operand 224 states and 238 transitions. Second operand 40 states. [2020-10-23 20:27:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:53,224 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2020-10-23 20:27:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-23 20:27:53,225 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 371 [2020-10-23 20:27:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:53,227 INFO L225 Difference]: With dead ends: 236 [2020-10-23 20:27:53,227 INFO L226 Difference]: Without dead ends: 229 [2020-10-23 20:27:53,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2159, Invalid=4003, Unknown=0, NotChecked=0, Total=6162 [2020-10-23 20:27:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-23 20:27:53,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-10-23 20:27:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-23 20:27:53,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 243 transitions. [2020-10-23 20:27:53,257 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 243 transitions. Word has length 371 [2020-10-23 20:27:53,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:53,258 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 243 transitions. [2020-10-23 20:27:53,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-23 20:27:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 243 transitions. [2020-10-23 20:27:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-23 20:27:53,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:53,261 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 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, 1, 1, 1, 1, 1] [2020-10-23 20:27:53,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-23 20:27:53,261 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:53,262 INFO L82 PathProgramCache]: Analyzing trace with hash -182927383, now seen corresponding path program 35 times [2020-10-23 20:27:53,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:53,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133736678] [2020-10-23 20:27:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:53,268 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:53,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:27:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:53,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:53,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:53,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:53,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:54,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:55,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:27:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2020-10-23 20:27:57,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133736678] [2020-10-23 20:27:57,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:57,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-10-23 20:27:57,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792821876] [2020-10-23 20:27:57,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-23 20:27:57,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:57,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-23 20:27:57,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=931, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 20:27:57,212 INFO L87 Difference]: Start difference. First operand 229 states and 243 transitions. Second operand 41 states. [2020-10-23 20:28:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:28:00,270 INFO L93 Difference]: Finished difference Result 241 states and 255 transitions. [2020-10-23 20:28:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-23 20:28:00,271 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 381 [2020-10-23 20:28:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:28:00,274 INFO L225 Difference]: With dead ends: 241 [2020-10-23 20:28:00,274 INFO L226 Difference]: Without dead ends: 234 [2020-10-23 20:28:00,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2274, Invalid=4206, Unknown=0, NotChecked=0, Total=6480 [2020-10-23 20:28:00,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-23 20:28:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-23 20:28:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-23 20:28:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 248 transitions. [2020-10-23 20:28:00,303 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 248 transitions. Word has length 381 [2020-10-23 20:28:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:28:00,303 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 248 transitions. [2020-10-23 20:28:00,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-23 20:28:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 248 transitions. [2020-10-23 20:28:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-23 20:28:00,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:28:00,307 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 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, 1, 1, 1, 1, 1] [2020-10-23 20:28:00,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-23 20:28:00,307 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:28:00,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:28:00,307 INFO L82 PathProgramCache]: Analyzing trace with hash 353556199, now seen corresponding path program 36 times [2020-10-23 20:28:00,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:28:00,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666278677] [2020-10-23 20:28:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:28:00,314 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:28:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:00,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:28:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:00,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:28:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:00,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:00,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:01,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:03,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:03,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:03,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3258 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3258 trivial. 0 not checked. [2020-10-23 20:28:04,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666278677] [2020-10-23 20:28:04,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:28:04,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2020-10-23 20:28:04,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253415720] [2020-10-23 20:28:04,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-23 20:28:04,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:28:04,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-23 20:28:04,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=747, Invalid=975, Unknown=0, NotChecked=0, Total=1722 [2020-10-23 20:28:04,667 INFO L87 Difference]: Start difference. First operand 234 states and 248 transitions. Second operand 42 states. [2020-10-23 20:28:07,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:28:07,845 INFO L93 Difference]: Finished difference Result 246 states and 260 transitions. [2020-10-23 20:28:07,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-23 20:28:07,846 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 391 [2020-10-23 20:28:07,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:28:07,848 INFO L225 Difference]: With dead ends: 246 [2020-10-23 20:28:07,849 INFO L226 Difference]: Without dead ends: 239 [2020-10-23 20:28:07,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2392, Invalid=4414, Unknown=0, NotChecked=0, Total=6806 [2020-10-23 20:28:07,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-23 20:28:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2020-10-23 20:28:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-23 20:28:07,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 253 transitions. [2020-10-23 20:28:07,881 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 253 transitions. Word has length 391 [2020-10-23 20:28:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:28:07,881 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 253 transitions. [2020-10-23 20:28:07,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-23 20:28:07,881 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 253 transitions. [2020-10-23 20:28:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-23 20:28:07,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:28:07,885 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 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, 1, 1, 1, 1, 1] [2020-10-23 20:28:07,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-23 20:28:07,885 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:28:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:28:07,885 INFO L82 PathProgramCache]: Analyzing trace with hash -364149335, now seen corresponding path program 37 times [2020-10-23 20:28:07,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:28:07,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746956012] [2020-10-23 20:28:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:28:07,892 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:28:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:28:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:28:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:08,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:10,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3441 trivial. 0 not checked. [2020-10-23 20:28:12,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746956012] [2020-10-23 20:28:12,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:28:12,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2020-10-23 20:28:12,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896880851] [2020-10-23 20:28:12,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-23 20:28:12,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:28:12,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-23 20:28:12,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=786, Invalid=1020, Unknown=0, NotChecked=0, Total=1806 [2020-10-23 20:28:12,233 INFO L87 Difference]: Start difference. First operand 239 states and 253 transitions. Second operand 43 states. [2020-10-23 20:28:15,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:28:15,511 INFO L93 Difference]: Finished difference Result 251 states and 265 transitions. [2020-10-23 20:28:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-23 20:28:15,512 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 401 [2020-10-23 20:28:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:28:15,515 INFO L225 Difference]: With dead ends: 251 [2020-10-23 20:28:15,515 INFO L226 Difference]: Without dead ends: 244 [2020-10-23 20:28:15,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2513, Invalid=4627, Unknown=0, NotChecked=0, Total=7140 [2020-10-23 20:28:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-23 20:28:15,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2020-10-23 20:28:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-23 20:28:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 258 transitions. [2020-10-23 20:28:15,548 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 258 transitions. Word has length 401 [2020-10-23 20:28:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:28:15,548 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 258 transitions. [2020-10-23 20:28:15,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-23 20:28:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 258 transitions. [2020-10-23 20:28:15,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-23 20:28:15,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:28:15,552 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 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, 1, 1, 1, 1, 1] [2020-10-23 20:28:15,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-23 20:28:15,552 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:28:15,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:28:15,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1076816089, now seen corresponding path program 38 times [2020-10-23 20:28:15,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:28:15,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474368195] [2020-10-23 20:28:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:28:15,559 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:28:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:15,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:28:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:15,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:28:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:15,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:15,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:16,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:17,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:18,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:18,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:18,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:18,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3629 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3629 trivial. 0 not checked. [2020-10-23 20:28:20,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474368195] [2020-10-23 20:28:20,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:28:20,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2020-10-23 20:28:20,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116617873] [2020-10-23 20:28:20,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-23 20:28:20,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:28:20,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-23 20:28:20,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=826, Invalid=1066, Unknown=0, NotChecked=0, Total=1892 [2020-10-23 20:28:20,105 INFO L87 Difference]: Start difference. First operand 244 states and 258 transitions. Second operand 44 states. [2020-10-23 20:28:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:28:23,556 INFO L93 Difference]: Finished difference Result 256 states and 270 transitions. [2020-10-23 20:28:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-23 20:28:23,557 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 411 [2020-10-23 20:28:23,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:28:23,559 INFO L225 Difference]: With dead ends: 256 [2020-10-23 20:28:23,559 INFO L226 Difference]: Without dead ends: 249 [2020-10-23 20:28:23,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2637, Invalid=4845, Unknown=0, NotChecked=0, Total=7482 [2020-10-23 20:28:23,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-23 20:28:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-10-23 20:28:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-23 20:28:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 263 transitions. [2020-10-23 20:28:23,594 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 263 transitions. Word has length 411 [2020-10-23 20:28:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:28:23,594 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 263 transitions. [2020-10-23 20:28:23,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-23 20:28:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 263 transitions. [2020-10-23 20:28:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-23 20:28:23,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:28:23,598 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 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, 1, 1, 1, 1, 1] [2020-10-23 20:28:23,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-23 20:28:23,599 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:28:23,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:28:23,599 INFO L82 PathProgramCache]: Analyzing trace with hash -149595287, now seen corresponding path program 39 times [2020-10-23 20:28:23,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:28:23,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332832034] [2020-10-23 20:28:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:28:23,607 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:28:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:23,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:28:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:23,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:28:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:23,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:23,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:24,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:24,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:24,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:24,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:24,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:24,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:25,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:26,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3822 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2020-10-23 20:28:28,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332832034] [2020-10-23 20:28:28,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:28:28,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-10-23 20:28:28,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515165896] [2020-10-23 20:28:28,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-23 20:28:28,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:28:28,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-23 20:28:28,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=867, Invalid=1113, Unknown=0, NotChecked=0, Total=1980 [2020-10-23 20:28:28,574 INFO L87 Difference]: Start difference. First operand 249 states and 263 transitions. Second operand 45 states. [2020-10-23 20:28:32,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:28:32,014 INFO L93 Difference]: Finished difference Result 261 states and 275 transitions. [2020-10-23 20:28:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-23 20:28:32,015 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 421 [2020-10-23 20:28:32,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:28:32,017 INFO L225 Difference]: With dead ends: 261 [2020-10-23 20:28:32,018 INFO L226 Difference]: Without dead ends: 254 [2020-10-23 20:28:32,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2764, Invalid=5068, Unknown=0, NotChecked=0, Total=7832 [2020-10-23 20:28:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-23 20:28:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-23 20:28:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-23 20:28:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 268 transitions. [2020-10-23 20:28:32,048 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 268 transitions. Word has length 421 [2020-10-23 20:28:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:28:32,049 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 268 transitions. [2020-10-23 20:28:32,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-23 20:28:32,049 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 268 transitions. [2020-10-23 20:28:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-23 20:28:32,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:28:32,052 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 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, 1, 1, 1, 1, 1] [2020-10-23 20:28:32,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-23 20:28:32,052 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:28:32,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:28:32,053 INFO L82 PathProgramCache]: Analyzing trace with hash -992000153, now seen corresponding path program 40 times [2020-10-23 20:28:32,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:28:32,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628286764] [2020-10-23 20:28:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:28:32,059 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:28:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:32,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:28:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:28:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:32,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:32,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:32,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:35,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:35,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:35,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:35,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:35,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:35,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4020 trivial. 0 not checked. [2020-10-23 20:28:37,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628286764] [2020-10-23 20:28:37,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:28:37,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2020-10-23 20:28:37,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861529513] [2020-10-23 20:28:37,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-23 20:28:37,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:28:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-23 20:28:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=1161, Unknown=0, NotChecked=0, Total=2070 [2020-10-23 20:28:37,302 INFO L87 Difference]: Start difference. First operand 254 states and 268 transitions. Second operand 46 states. [2020-10-23 20:28:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:28:40,840 INFO L93 Difference]: Finished difference Result 266 states and 280 transitions. [2020-10-23 20:28:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-23 20:28:40,841 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 431 [2020-10-23 20:28:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:28:40,844 INFO L225 Difference]: With dead ends: 266 [2020-10-23 20:28:40,844 INFO L226 Difference]: Without dead ends: 259 [2020-10-23 20:28:40,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1808 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2894, Invalid=5296, Unknown=0, NotChecked=0, Total=8190 [2020-10-23 20:28:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-23 20:28:40,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2020-10-23 20:28:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-23 20:28:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 273 transitions. [2020-10-23 20:28:40,879 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 273 transitions. Word has length 431 [2020-10-23 20:28:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:28:40,880 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 273 transitions. [2020-10-23 20:28:40,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-23 20:28:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 273 transitions. [2020-10-23 20:28:40,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-23 20:28:40,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:28:40,883 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 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, 1, 1, 1, 1, 1] [2020-10-23 20:28:40,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-23 20:28:40,884 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:28:40,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:28:40,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1279114967, now seen corresponding path program 41 times [2020-10-23 20:28:40,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:28:40,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925855330] [2020-10-23 20:28:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:28:40,893 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:28:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:28:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:28:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:41,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:41,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:42,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:44,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:44,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:44,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4223 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4223 trivial. 0 not checked. [2020-10-23 20:28:46,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925855330] [2020-10-23 20:28:46,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:28:46,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2020-10-23 20:28:46,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891378372] [2020-10-23 20:28:46,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-23 20:28:46,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:28:46,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-23 20:28:46,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=952, Invalid=1210, Unknown=0, NotChecked=0, Total=2162 [2020-10-23 20:28:46,336 INFO L87 Difference]: Start difference. First operand 259 states and 273 transitions. Second operand 47 states. [2020-10-23 20:28:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:28:50,118 INFO L93 Difference]: Finished difference Result 271 states and 285 transitions. [2020-10-23 20:28:50,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-23 20:28:50,119 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 441 [2020-10-23 20:28:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:28:50,121 INFO L225 Difference]: With dead ends: 271 [2020-10-23 20:28:50,121 INFO L226 Difference]: Without dead ends: 264 [2020-10-23 20:28:50,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3027, Invalid=5529, Unknown=0, NotChecked=0, Total=8556 [2020-10-23 20:28:50,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-23 20:28:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2020-10-23 20:28:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-23 20:28:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 278 transitions. [2020-10-23 20:28:50,156 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 278 transitions. Word has length 441 [2020-10-23 20:28:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:28:50,157 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 278 transitions. [2020-10-23 20:28:50,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-23 20:28:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 278 transitions. [2020-10-23 20:28:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-23 20:28:50,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:28:50,161 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 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, 1, 1, 1, 1, 1] [2020-10-23 20:28:50,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-23 20:28:50,161 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:28:50,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:28:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash -84842585, now seen corresponding path program 42 times [2020-10-23 20:28:50,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:28:50,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42872312] [2020-10-23 20:28:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:28:50,168 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:28:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:50,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:28:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:50,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:28:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:50,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:50,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:50,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:50,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:51,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:51,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:51,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:51,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:51,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:51,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:51,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:51,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:53,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:28:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:55,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4431 trivial. 0 not checked. [2020-10-23 20:28:55,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42872312] [2020-10-23 20:28:55,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:28:55,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2020-10-23 20:28:55,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731223176] [2020-10-23 20:28:55,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-23 20:28:55,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:28:55,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-23 20:28:55,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=996, Invalid=1260, Unknown=0, NotChecked=0, Total=2256 [2020-10-23 20:28:55,926 INFO L87 Difference]: Start difference. First operand 264 states and 278 transitions. Second operand 48 states. [2020-10-23 20:28:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:28:59,708 INFO L93 Difference]: Finished difference Result 276 states and 290 transitions. [2020-10-23 20:28:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-23 20:28:59,709 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 451 [2020-10-23 20:28:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:28:59,711 INFO L225 Difference]: With dead ends: 276 [2020-10-23 20:28:59,711 INFO L226 Difference]: Without dead ends: 269 [2020-10-23 20:28:59,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1982 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3163, Invalid=5767, Unknown=0, NotChecked=0, Total=8930 [2020-10-23 20:28:59,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-23 20:28:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2020-10-23 20:28:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-23 20:28:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 283 transitions. [2020-10-23 20:28:59,741 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 283 transitions. Word has length 451 [2020-10-23 20:28:59,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:28:59,742 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 283 transitions. [2020-10-23 20:28:59,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-23 20:28:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 283 transitions. [2020-10-23 20:28:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-23 20:28:59,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:28:59,745 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 43, 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] [2020-10-23 20:28:59,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-23 20:28:59,745 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:28:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:28:59,746 INFO L82 PathProgramCache]: Analyzing trace with hash 429799145, now seen corresponding path program 43 times [2020-10-23 20:28:59,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:28:59,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821234499] [2020-10-23 20:28:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:28:59,751 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:28:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:59,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:28:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:28:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:28:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:00,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:00,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:00,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:00,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:01,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:03,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:03,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:03,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:03,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:03,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:03,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:03,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4644 trivial. 0 not checked. [2020-10-23 20:29:05,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821234499] [2020-10-23 20:29:05,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:05,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2020-10-23 20:29:05,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648125338] [2020-10-23 20:29:05,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-23 20:29:05,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:05,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-23 20:29:05,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1041, Invalid=1311, Unknown=0, NotChecked=0, Total=2352 [2020-10-23 20:29:05,852 INFO L87 Difference]: Start difference. First operand 269 states and 283 transitions. Second operand 49 states. [2020-10-23 20:29:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:09,670 INFO L93 Difference]: Finished difference Result 281 states and 295 transitions. [2020-10-23 20:29:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-23 20:29:09,671 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 461 [2020-10-23 20:29:09,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:09,674 INFO L225 Difference]: With dead ends: 281 [2020-10-23 20:29:09,674 INFO L226 Difference]: Without dead ends: 274 [2020-10-23 20:29:09,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3302, Invalid=6010, Unknown=0, NotChecked=0, Total=9312 [2020-10-23 20:29:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-23 20:29:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-23 20:29:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-23 20:29:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 288 transitions. [2020-10-23 20:29:09,710 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 288 transitions. Word has length 461 [2020-10-23 20:29:09,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:09,711 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 288 transitions. [2020-10-23 20:29:09,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-23 20:29:09,711 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 288 transitions. [2020-10-23 20:29:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-23 20:29:09,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:09,715 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 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] [2020-10-23 20:29:09,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-23 20:29:09,715 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:09,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1212450841, now seen corresponding path program 44 times [2020-10-23 20:29:09,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:09,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256455659] [2020-10-23 20:29:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:09,723 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:09,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:29:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:10,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:10,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:10,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:10,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:10,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:11,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:11,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:11,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:11,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:11,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:11,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:12,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:13,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4862 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4862 trivial. 0 not checked. [2020-10-23 20:29:16,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256455659] [2020-10-23 20:29:16,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:16,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2020-10-23 20:29:16,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386254788] [2020-10-23 20:29:16,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-23 20:29:16,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:16,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-23 20:29:16,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1087, Invalid=1363, Unknown=0, NotChecked=0, Total=2450 [2020-10-23 20:29:16,132 INFO L87 Difference]: Start difference. First operand 274 states and 288 transitions. Second operand 50 states. [2020-10-23 20:29:20,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:20,052 INFO L93 Difference]: Finished difference Result 286 states and 300 transitions. [2020-10-23 20:29:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-23 20:29:20,053 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 471 [2020-10-23 20:29:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:20,056 INFO L225 Difference]: With dead ends: 286 [2020-10-23 20:29:20,056 INFO L226 Difference]: Without dead ends: 279 [2020-10-23 20:29:20,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2164 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3444, Invalid=6258, Unknown=0, NotChecked=0, Total=9702 [2020-10-23 20:29:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-23 20:29:20,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2020-10-23 20:29:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-23 20:29:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 293 transitions. [2020-10-23 20:29:20,092 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 293 transitions. Word has length 471 [2020-10-23 20:29:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:20,093 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 293 transitions. [2020-10-23 20:29:20,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-23 20:29:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 293 transitions. [2020-10-23 20:29:20,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-23 20:29:20,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:20,097 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 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] [2020-10-23 20:29:20,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-23 20:29:20,097 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:20,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1123368105, now seen corresponding path program 45 times [2020-10-23 20:29:20,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:20,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724428264] [2020-10-23 20:29:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:20,104 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:20,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:20,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:29:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:20,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:20,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:20,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:20,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:20,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:20,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:21,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:21,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:21,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:21,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:21,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:21,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:22,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:23,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:24,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:24,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:24,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5085 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5085 trivial. 0 not checked. [2020-10-23 20:29:26,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724428264] [2020-10-23 20:29:26,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:26,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2020-10-23 20:29:26,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436310159] [2020-10-23 20:29:26,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-23 20:29:26,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:26,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-23 20:29:26,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1134, Invalid=1416, Unknown=0, NotChecked=0, Total=2550 [2020-10-23 20:29:26,910 INFO L87 Difference]: Start difference. First operand 279 states and 293 transitions. Second operand 51 states. [2020-10-23 20:29:30,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:30,935 INFO L93 Difference]: Finished difference Result 291 states and 305 transitions. [2020-10-23 20:29:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-23 20:29:30,935 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 481 [2020-10-23 20:29:30,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:30,938 INFO L225 Difference]: With dead ends: 291 [2020-10-23 20:29:30,938 INFO L226 Difference]: Without dead ends: 284 [2020-10-23 20:29:30,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2258 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3589, Invalid=6511, Unknown=0, NotChecked=0, Total=10100 [2020-10-23 20:29:30,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-23 20:29:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2020-10-23 20:29:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-23 20:29:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 298 transitions. [2020-10-23 20:29:30,974 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 298 transitions. Word has length 481 [2020-10-23 20:29:30,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:30,974 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 298 transitions. [2020-10-23 20:29:30,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-23 20:29:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 298 transitions. [2020-10-23 20:29:30,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-23 20:29:30,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:30,978 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 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] [2020-10-23 20:29:30,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-23 20:29:30,978 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:30,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:30,979 INFO L82 PathProgramCache]: Analyzing trace with hash 267483175, now seen corresponding path program 46 times [2020-10-23 20:29:30,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:30,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944882411] [2020-10-23 20:29:30,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:30,986 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:31,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:29:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:31,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:31,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:31,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:32,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:32,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:32,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:32,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:32,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:32,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:32,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:32,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:33,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:34,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:35,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:35,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:35,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:38,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5313 trivial. 0 not checked. [2020-10-23 20:29:38,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944882411] [2020-10-23 20:29:38,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:38,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2020-10-23 20:29:38,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101946073] [2020-10-23 20:29:38,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-23 20:29:38,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:38,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-23 20:29:38,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1182, Invalid=1470, Unknown=0, NotChecked=0, Total=2652 [2020-10-23 20:29:38,231 INFO L87 Difference]: Start difference. First operand 284 states and 298 transitions. Second operand 52 states. [2020-10-23 20:29:42,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:42,238 INFO L93 Difference]: Finished difference Result 296 states and 310 transitions. [2020-10-23 20:29:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-23 20:29:42,239 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 491 [2020-10-23 20:29:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:42,241 INFO L225 Difference]: With dead ends: 296 [2020-10-23 20:29:42,242 INFO L226 Difference]: Without dead ends: 289 [2020-10-23 20:29:42,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3737, Invalid=6769, Unknown=0, NotChecked=0, Total=10506 [2020-10-23 20:29:42,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-23 20:29:42,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-10-23 20:29:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-23 20:29:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 303 transitions. [2020-10-23 20:29:42,279 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 303 transitions. Word has length 491 [2020-10-23 20:29:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:42,280 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 303 transitions. [2020-10-23 20:29:42,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-23 20:29:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 303 transitions. [2020-10-23 20:29:42,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-23 20:29:42,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:42,284 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 47, 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] [2020-10-23 20:29:42,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-23 20:29:42,285 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:42,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:42,285 INFO L82 PathProgramCache]: Analyzing trace with hash 722686569, now seen corresponding path program 47 times [2020-10-23 20:29:42,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:42,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502478041] [2020-10-23 20:29:42,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:42,293 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:42,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:29:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:42,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:43,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:43,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:43,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:43,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:43,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:43,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:44,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:45,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5546 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5546 trivial. 0 not checked. [2020-10-23 20:29:49,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502478041] [2020-10-23 20:29:49,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:49,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-10-23 20:29:49,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434194308] [2020-10-23 20:29:49,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-23 20:29:49,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:49,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-23 20:29:49,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1231, Invalid=1525, Unknown=0, NotChecked=0, Total=2756 [2020-10-23 20:29:49,776 INFO L87 Difference]: Start difference. First operand 289 states and 303 transitions. Second operand 53 states. [2020-10-23 20:29:54,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:54,032 INFO L93 Difference]: Finished difference Result 301 states and 315 transitions. [2020-10-23 20:29:54,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-23 20:29:54,032 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 501 [2020-10-23 20:29:54,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:54,035 INFO L225 Difference]: With dead ends: 301 [2020-10-23 20:29:54,035 INFO L226 Difference]: Without dead ends: 294 [2020-10-23 20:29:54,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2452 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3888, Invalid=7032, Unknown=0, NotChecked=0, Total=10920 [2020-10-23 20:29:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-23 20:29:54,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-10-23 20:29:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-10-23 20:29:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 308 transitions. [2020-10-23 20:29:54,072 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 308 transitions. Word has length 501 [2020-10-23 20:29:54,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:54,072 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 308 transitions. [2020-10-23 20:29:54,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-23 20:29:54,072 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 308 transitions. [2020-10-23 20:29:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-10-23 20:29:54,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:54,076 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 48, 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] [2020-10-23 20:29:54,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-23 20:29:54,076 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:54,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:54,076 INFO L82 PathProgramCache]: Analyzing trace with hash 390555751, now seen corresponding path program 48 times [2020-10-23 20:29:54,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:54,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840133605] [2020-10-23 20:29:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:54,082 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:54,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:54,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:29:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:54,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:54,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:54,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:54,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:55,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:55,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:55,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:55,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:55,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:56,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:56,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:56,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:56,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:56,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:56,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:56,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:56,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:56,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:57,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:58,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:29:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5784 trivial. 0 not checked. [2020-10-23 20:30:01,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840133605] [2020-10-23 20:30:01,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:01,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2020-10-23 20:30:01,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021069571] [2020-10-23 20:30:01,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-23 20:30:01,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:01,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-23 20:30:01,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1281, Invalid=1581, Unknown=0, NotChecked=0, Total=2862 [2020-10-23 20:30:01,761 INFO L87 Difference]: Start difference. First operand 294 states and 308 transitions. Second operand 54 states. [2020-10-23 20:30:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:06,320 INFO L93 Difference]: Finished difference Result 306 states and 320 transitions. [2020-10-23 20:30:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-23 20:30:06,320 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 511 [2020-10-23 20:30:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:06,323 INFO L225 Difference]: With dead ends: 306 [2020-10-23 20:30:06,323 INFO L226 Difference]: Without dead ends: 299 [2020-10-23 20:30:06,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2552 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=4042, Invalid=7300, Unknown=0, NotChecked=0, Total=11342 [2020-10-23 20:30:06,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-23 20:30:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2020-10-23 20:30:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-23 20:30:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 313 transitions. [2020-10-23 20:30:06,362 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 313 transitions. Word has length 511 [2020-10-23 20:30:06,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:06,363 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 313 transitions. [2020-10-23 20:30:06,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-23 20:30:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 313 transitions. [2020-10-23 20:30:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-23 20:30:06,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:06,367 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 49, 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] [2020-10-23 20:30:06,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-23 20:30:06,368 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:06,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1849980969, now seen corresponding path program 49 times [2020-10-23 20:30:06,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:06,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056993203] [2020-10-23 20:30:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:06,376 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:06,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:30:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:06,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:07,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:07,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:07,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:07,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:07,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:08,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:08,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:08,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:08,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:08,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:08,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:10,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:11,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:11,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:11,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:11,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6027 trivial. 0 not checked. [2020-10-23 20:30:14,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056993203] [2020-10-23 20:30:14,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:14,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2020-10-23 20:30:14,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195841058] [2020-10-23 20:30:14,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-23 20:30:14,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:14,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-23 20:30:14,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1332, Invalid=1638, Unknown=0, NotChecked=0, Total=2970 [2020-10-23 20:30:14,779 INFO L87 Difference]: Start difference. First operand 299 states and 313 transitions. Second operand 55 states. [2020-10-23 20:30:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:19,484 INFO L93 Difference]: Finished difference Result 311 states and 325 transitions. [2020-10-23 20:30:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-23 20:30:19,485 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 521 [2020-10-23 20:30:19,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:19,489 INFO L225 Difference]: With dead ends: 311 [2020-10-23 20:30:19,489 INFO L226 Difference]: Without dead ends: 304 [2020-10-23 20:30:19,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2654 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4199, Invalid=7573, Unknown=0, NotChecked=0, Total=11772 [2020-10-23 20:30:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-23 20:30:19,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-10-23 20:30:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-23 20:30:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 318 transitions. [2020-10-23 20:30:19,518 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 318 transitions. Word has length 521 [2020-10-23 20:30:19,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:19,519 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 318 transitions. [2020-10-23 20:30:19,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-23 20:30:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 318 transitions. [2020-10-23 20:30:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-23 20:30:19,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:19,523 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 50, 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] [2020-10-23 20:30:19,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-23 20:30:19,523 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:19,524 INFO L82 PathProgramCache]: Analyzing trace with hash 544295079, now seen corresponding path program 50 times [2020-10-23 20:30:19,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:19,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854429277] [2020-10-23 20:30:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:19,530 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:19,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:19,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:30:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:19,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:20,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:20,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:20,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:20,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:20,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:21,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:21,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:21,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:21,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:21,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:22,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:22,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:22,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:22,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:22,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:22,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:22,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:23,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6275 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6275 trivial. 0 not checked. [2020-10-23 20:30:28,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854429277] [2020-10-23 20:30:28,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:28,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2020-10-23 20:30:28,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195437288] [2020-10-23 20:30:28,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-23 20:30:28,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:28,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-23 20:30:28,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1384, Invalid=1696, Unknown=0, NotChecked=0, Total=3080 [2020-10-23 20:30:28,322 INFO L87 Difference]: Start difference. First operand 304 states and 318 transitions. Second operand 56 states. [2020-10-23 20:30:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:32,869 INFO L93 Difference]: Finished difference Result 316 states and 330 transitions. [2020-10-23 20:30:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-23 20:30:32,875 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 531 [2020-10-23 20:30:32,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:32,877 INFO L225 Difference]: With dead ends: 316 [2020-10-23 20:30:32,877 INFO L226 Difference]: Without dead ends: 309 [2020-10-23 20:30:32,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2758 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4359, Invalid=7851, Unknown=0, NotChecked=0, Total=12210 [2020-10-23 20:30:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-23 20:30:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2020-10-23 20:30:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-23 20:30:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 323 transitions. [2020-10-23 20:30:32,914 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 323 transitions. Word has length 531 [2020-10-23 20:30:32,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:32,915 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 323 transitions. [2020-10-23 20:30:32,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-23 20:30:32,915 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 323 transitions. [2020-10-23 20:30:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-23 20:30:32,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:32,919 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 51, 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] [2020-10-23 20:30:32,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-23 20:30:32,920 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:32,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:32,920 INFO L82 PathProgramCache]: Analyzing trace with hash 164933097, now seen corresponding path program 51 times [2020-10-23 20:30:32,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:32,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52599819] [2020-10-23 20:30:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:32,928 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:33,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:30:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:33,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:33,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:33,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:33,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:34,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:34,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:34,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:34,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:34,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:36,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:36,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:36,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:36,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:36,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:36,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:36,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:38,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:38,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:38,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:38,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6528 trivial. 0 not checked. [2020-10-23 20:30:41,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52599819] [2020-10-23 20:30:41,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:41,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2020-10-23 20:30:41,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395014590] [2020-10-23 20:30:41,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-23 20:30:41,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:41,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-23 20:30:41,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1437, Invalid=1755, Unknown=0, NotChecked=0, Total=3192 [2020-10-23 20:30:41,977 INFO L87 Difference]: Start difference. First operand 309 states and 323 transitions. Second operand 57 states. [2020-10-23 20:30:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:46,655 INFO L93 Difference]: Finished difference Result 321 states and 335 transitions. [2020-10-23 20:30:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-23 20:30:46,656 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 541 [2020-10-23 20:30:46,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:46,658 INFO L225 Difference]: With dead ends: 321 [2020-10-23 20:30:46,658 INFO L226 Difference]: Without dead ends: 314 [2020-10-23 20:30:46,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2864 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4522, Invalid=8134, Unknown=0, NotChecked=0, Total=12656 [2020-10-23 20:30:46,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-23 20:30:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2020-10-23 20:30:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-23 20:30:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 328 transitions. [2020-10-23 20:30:46,697 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 328 transitions. Word has length 541 [2020-10-23 20:30:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:46,697 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 328 transitions. [2020-10-23 20:30:46,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-23 20:30:46,697 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 328 transitions. [2020-10-23 20:30:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-23 20:30:46,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:46,702 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 52, 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] [2020-10-23 20:30:46,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-23 20:30:46,702 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:46,703 INFO L82 PathProgramCache]: Analyzing trace with hash -48031513, now seen corresponding path program 52 times [2020-10-23 20:30:46,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:46,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75392160] [2020-10-23 20:30:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:46,710 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:30:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:47,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:47,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:47,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:49,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:49,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:49,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:50,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:52,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:52,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:52,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:52,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:52,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:30:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6786 trivial. 0 not checked. [2020-10-23 20:30:56,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75392160] [2020-10-23 20:30:56,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:56,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2020-10-23 20:30:56,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001677948] [2020-10-23 20:30:56,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-23 20:30:56,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:56,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-23 20:30:56,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1491, Invalid=1815, Unknown=0, NotChecked=0, Total=3306 [2020-10-23 20:30:56,372 INFO L87 Difference]: Start difference. First operand 314 states and 328 transitions. Second operand 58 states. [2020-10-23 20:31:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:31:01,475 INFO L93 Difference]: Finished difference Result 326 states and 340 transitions. [2020-10-23 20:31:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-23 20:31:01,476 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 551 [2020-10-23 20:31:01,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:31:01,478 INFO L225 Difference]: With dead ends: 326 [2020-10-23 20:31:01,478 INFO L226 Difference]: Without dead ends: 319 [2020-10-23 20:31:01,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2972 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=4688, Invalid=8422, Unknown=0, NotChecked=0, Total=13110 [2020-10-23 20:31:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-23 20:31:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-10-23 20:31:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-23 20:31:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 333 transitions. [2020-10-23 20:31:01,509 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 333 transitions. Word has length 551 [2020-10-23 20:31:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:31:01,509 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 333 transitions. [2020-10-23 20:31:01,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-23 20:31:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 333 transitions. [2020-10-23 20:31:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-23 20:31:01,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:31:01,513 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 53, 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] [2020-10-23 20:31:01,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-23 20:31:01,513 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:31:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:31:01,513 INFO L82 PathProgramCache]: Analyzing trace with hash 470807465, now seen corresponding path program 53 times [2020-10-23 20:31:01,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:31:01,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534815281] [2020-10-23 20:31:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:31:01,519 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:31:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:01,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:31:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:31:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:01,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:02,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:02,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:02,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:02,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:03,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:03,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:03,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:03,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:03,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:03,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:04,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:04,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:04,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:04,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:04,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:04,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:05,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:05,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:05,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:05,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:05,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:05,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:05,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:06,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:07,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:07,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:07,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:07,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:07,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7049 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7049 trivial. 0 not checked. [2020-10-23 20:31:11,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534815281] [2020-10-23 20:31:11,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:31:11,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2020-10-23 20:31:11,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611759563] [2020-10-23 20:31:11,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-23 20:31:11,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:31:11,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-23 20:31:11,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1546, Invalid=1876, Unknown=0, NotChecked=0, Total=3422 [2020-10-23 20:31:11,824 INFO L87 Difference]: Start difference. First operand 319 states and 333 transitions. Second operand 59 states. [2020-10-23 20:31:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:31:17,133 INFO L93 Difference]: Finished difference Result 331 states and 345 transitions. [2020-10-23 20:31:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-23 20:31:17,134 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 561 [2020-10-23 20:31:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:31:17,137 INFO L225 Difference]: With dead ends: 331 [2020-10-23 20:31:17,137 INFO L226 Difference]: Without dead ends: 324 [2020-10-23 20:31:17,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3082 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=4857, Invalid=8715, Unknown=0, NotChecked=0, Total=13572 [2020-10-23 20:31:17,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-23 20:31:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2020-10-23 20:31:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-23 20:31:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 338 transitions. [2020-10-23 20:31:17,171 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 338 transitions. Word has length 561 [2020-10-23 20:31:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:31:17,172 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 338 transitions. [2020-10-23 20:31:17,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-23 20:31:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 338 transitions. [2020-10-23 20:31:17,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-23 20:31:17,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:31:17,176 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 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] [2020-10-23 20:31:17,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-23 20:31:17,176 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:31:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:31:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1041291559, now seen corresponding path program 54 times [2020-10-23 20:31:17,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:31:17,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049218509] [2020-10-23 20:31:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:31:17,183 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:31:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:31:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:31:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:17,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:17,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:17,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:18,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:18,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:18,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:18,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:18,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:19,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:19,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:19,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:19,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:19,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:20,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:20,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:20,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:20,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:20,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:21,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:21,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:21,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:21,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:21,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:21,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:22,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:23,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:23,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:23,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:23,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:23,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7317 trivial. 0 not checked. [2020-10-23 20:31:28,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049218509] [2020-10-23 20:31:28,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:31:28,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2020-10-23 20:31:28,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354778049] [2020-10-23 20:31:28,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-23 20:31:28,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:31:28,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-23 20:31:28,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1602, Invalid=1938, Unknown=0, NotChecked=0, Total=3540 [2020-10-23 20:31:28,027 INFO L87 Difference]: Start difference. First operand 324 states and 338 transitions. Second operand 60 states. [2020-10-23 20:31:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:31:33,396 INFO L93 Difference]: Finished difference Result 336 states and 350 transitions. [2020-10-23 20:31:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-23 20:31:33,396 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 571 [2020-10-23 20:31:33,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:31:33,399 INFO L225 Difference]: With dead ends: 336 [2020-10-23 20:31:33,399 INFO L226 Difference]: Without dead ends: 329 [2020-10-23 20:31:33,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3194 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=5029, Invalid=9013, Unknown=0, NotChecked=0, Total=14042 [2020-10-23 20:31:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-23 20:31:33,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2020-10-23 20:31:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-10-23 20:31:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 343 transitions. [2020-10-23 20:31:33,440 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 343 transitions. Word has length 571 [2020-10-23 20:31:33,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:31:33,441 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 343 transitions. [2020-10-23 20:31:33,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-23 20:31:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 343 transitions. [2020-10-23 20:31:33,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-23 20:31:33,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:31:33,445 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 55, 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] [2020-10-23 20:31:33,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-23 20:31:33,445 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:31:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:31:33,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1539159703, now seen corresponding path program 55 times [2020-10-23 20:31:33,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:31:33,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263741128] [2020-10-23 20:31:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:31:33,453 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:31:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:33,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:31:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:33,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:31:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:34,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:34,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:34,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:34,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:34,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:35,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:35,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:35,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:35,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:36,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:36,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:36,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:36,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:36,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:36,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:36,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:36,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:37,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:37,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:37,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:37,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:37,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:38,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:38,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:38,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:38,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:38,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:38,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:39,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:40,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:40,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:40,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7590 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7590 trivial. 0 not checked. [2020-10-23 20:31:44,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263741128] [2020-10-23 20:31:44,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:31:44,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2020-10-23 20:31:44,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063531083] [2020-10-23 20:31:44,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-23 20:31:44,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:31:44,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-23 20:31:44,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1659, Invalid=2001, Unknown=0, NotChecked=0, Total=3660 [2020-10-23 20:31:44,732 INFO L87 Difference]: Start difference. First operand 329 states and 343 transitions. Second operand 61 states. [2020-10-23 20:31:50,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:31:50,404 INFO L93 Difference]: Finished difference Result 341 states and 355 transitions. [2020-10-23 20:31:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-23 20:31:50,405 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 581 [2020-10-23 20:31:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:31:50,408 INFO L225 Difference]: With dead ends: 341 [2020-10-23 20:31:50,408 INFO L226 Difference]: Without dead ends: 334 [2020-10-23 20:31:50,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=5204, Invalid=9316, Unknown=0, NotChecked=0, Total=14520 [2020-10-23 20:31:50,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-23 20:31:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2020-10-23 20:31:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-23 20:31:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 348 transitions. [2020-10-23 20:31:50,440 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 348 transitions. Word has length 581 [2020-10-23 20:31:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:31:50,440 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 348 transitions. [2020-10-23 20:31:50,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-23 20:31:50,440 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 348 transitions. [2020-10-23 20:31:50,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2020-10-23 20:31:50,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:31:50,444 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 56, 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] [2020-10-23 20:31:50,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-23 20:31:50,444 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:31:50,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:31:50,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1928235367, now seen corresponding path program 56 times [2020-10-23 20:31:50,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:31:50,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991553481] [2020-10-23 20:31:50,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:31:50,450 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:31:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:50,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:31:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:50,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:31:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:50,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:51,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:51,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:51,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:52,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:52,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:52,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:52,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:53,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:53,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:53,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:53,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:53,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:53,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:54,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:54,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:54,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:54,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:55,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:55,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:55,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:55,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:55,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:55,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:55,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:55,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:56,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:56,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:56,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:56,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:56,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:56,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:56,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:56,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:57,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:57,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:57,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:57,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:31:57,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:31:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7868 trivial. 0 not checked. [2020-10-23 20:32:02,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991553481] [2020-10-23 20:32:02,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:32:02,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2020-10-23 20:32:02,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477656731] [2020-10-23 20:32:02,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-23 20:32:02,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:32:02,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-23 20:32:02,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1717, Invalid=2065, Unknown=0, NotChecked=0, Total=3782 [2020-10-23 20:32:02,440 INFO L87 Difference]: Start difference. First operand 334 states and 348 transitions. Second operand 62 states. [2020-10-23 20:32:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:32:07,976 INFO L93 Difference]: Finished difference Result 346 states and 360 transitions. [2020-10-23 20:32:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-23 20:32:07,977 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 591 [2020-10-23 20:32:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:32:07,980 INFO L225 Difference]: With dead ends: 346 [2020-10-23 20:32:07,980 INFO L226 Difference]: Without dead ends: 339 [2020-10-23 20:32:07,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3424 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=5382, Invalid=9624, Unknown=0, NotChecked=0, Total=15006 [2020-10-23 20:32:07,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-23 20:32:08,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2020-10-23 20:32:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-23 20:32:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 353 transitions. [2020-10-23 20:32:08,008 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 353 transitions. Word has length 591 [2020-10-23 20:32:08,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:32:08,008 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 353 transitions. [2020-10-23 20:32:08,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-23 20:32:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 353 transitions. [2020-10-23 20:32:08,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2020-10-23 20:32:08,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:32:08,011 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 57, 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] [2020-10-23 20:32:08,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-23 20:32:08,012 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:32:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:32:08,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1119334185, now seen corresponding path program 57 times [2020-10-23 20:32:08,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:32:08,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468707256] [2020-10-23 20:32:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:32:08,018 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:32:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:08,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:32:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:08,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:32:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:08,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:08,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:08,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:09,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:09,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:09,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:09,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:09,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:10,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:10,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:10,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:11,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:11,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:11,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:11,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:11,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:11,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:12,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:12,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:12,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:12,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:13,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:13,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:13,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:13,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:13,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:13,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:13,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:14,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:14,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:14,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:14,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:14,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:14,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:14,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:15,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:15,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:15,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:15,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:15,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8151 trivial. 0 not checked. [2020-10-23 20:32:20,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468707256] [2020-10-23 20:32:20,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:32:20,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2020-10-23 20:32:20,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970851987] [2020-10-23 20:32:20,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-23 20:32:20,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:32:20,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-23 20:32:20,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1776, Invalid=2130, Unknown=0, NotChecked=0, Total=3906 [2020-10-23 20:32:20,379 INFO L87 Difference]: Start difference. First operand 339 states and 353 transitions. Second operand 63 states. [2020-10-23 20:32:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:32:25,694 INFO L93 Difference]: Finished difference Result 351 states and 365 transitions. [2020-10-23 20:32:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-23 20:32:25,695 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 601 [2020-10-23 20:32:25,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:32:25,697 INFO L225 Difference]: With dead ends: 351 [2020-10-23 20:32:25,698 INFO L226 Difference]: Without dead ends: 344 [2020-10-23 20:32:25,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3542 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=5563, Invalid=9937, Unknown=0, NotChecked=0, Total=15500 [2020-10-23 20:32:25,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-23 20:32:25,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2020-10-23 20:32:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-23 20:32:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 358 transitions. [2020-10-23 20:32:25,739 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 358 transitions. Word has length 601 [2020-10-23 20:32:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:32:25,739 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 358 transitions. [2020-10-23 20:32:25,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-23 20:32:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 358 transitions. [2020-10-23 20:32:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2020-10-23 20:32:25,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:32:25,745 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 58, 58, 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] [2020-10-23 20:32:25,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-23 20:32:25,745 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:32:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:32:25,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1785735591, now seen corresponding path program 58 times [2020-10-23 20:32:25,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:32:25,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223343746] [2020-10-23 20:32:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:32:25,752 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:32:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:32:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:25,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:32:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:26,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:26,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:26,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:27,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:27,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:27,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:27,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:28,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:28,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:28,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:28,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:28,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:29,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:29,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:29,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:29,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:30,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:30,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:30,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:30,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:30,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:30,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:31,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:32,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8439 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8439 trivial. 0 not checked. [2020-10-23 20:32:38,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223343746] [2020-10-23 20:32:38,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:32:38,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2020-10-23 20:32:38,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143444665] [2020-10-23 20:32:38,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-23 20:32:38,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:32:38,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-23 20:32:38,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1836, Invalid=2196, Unknown=0, NotChecked=0, Total=4032 [2020-10-23 20:32:38,380 INFO L87 Difference]: Start difference. First operand 344 states and 358 transitions. Second operand 64 states. [2020-10-23 20:32:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:32:43,863 INFO L93 Difference]: Finished difference Result 356 states and 370 transitions. [2020-10-23 20:32:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-23 20:32:43,864 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 611 [2020-10-23 20:32:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:32:43,866 INFO L225 Difference]: With dead ends: 356 [2020-10-23 20:32:43,866 INFO L226 Difference]: Without dead ends: 349 [2020-10-23 20:32:43,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3662 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=5747, Invalid=10255, Unknown=0, NotChecked=0, Total=16002 [2020-10-23 20:32:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-23 20:32:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2020-10-23 20:32:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-23 20:32:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 363 transitions. [2020-10-23 20:32:43,903 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 363 transitions. Word has length 611 [2020-10-23 20:32:43,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:32:43,904 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 363 transitions. [2020-10-23 20:32:43,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-23 20:32:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 363 transitions. [2020-10-23 20:32:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2020-10-23 20:32:43,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:32:43,908 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 59, 59, 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] [2020-10-23 20:32:43,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-23 20:32:43,908 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:32:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:32:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash -121887511, now seen corresponding path program 59 times [2020-10-23 20:32:43,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:32:43,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981105831] [2020-10-23 20:32:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:32:43,914 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:32:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:44,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:32:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:44,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:32:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:44,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:44,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:45,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:45,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:45,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:45,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:46,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:46,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:46,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:46,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:46,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:46,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:46,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:47,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:47,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:47,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:47,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:48,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:48,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:48,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:48,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:48,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:48,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:48,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:50,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:50,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:50,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:50,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:50,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:51,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:51,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:51,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:51,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:32:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8732 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8732 trivial. 0 not checked. [2020-10-23 20:32:57,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981105831] [2020-10-23 20:32:57,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:32:57,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2020-10-23 20:32:57,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002869942] [2020-10-23 20:32:57,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-23 20:32:57,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:32:57,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-23 20:32:57,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1897, Invalid=2263, Unknown=0, NotChecked=0, Total=4160 [2020-10-23 20:32:57,023 INFO L87 Difference]: Start difference. First operand 349 states and 363 transitions. Second operand 65 states. [2020-10-23 20:33:02,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:02,641 INFO L93 Difference]: Finished difference Result 361 states and 375 transitions. [2020-10-23 20:33:02,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-23 20:33:02,642 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 621 [2020-10-23 20:33:02,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:02,645 INFO L225 Difference]: With dead ends: 361 [2020-10-23 20:33:02,645 INFO L226 Difference]: Without dead ends: 354 [2020-10-23 20:33:02,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3784 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=5934, Invalid=10578, Unknown=0, NotChecked=0, Total=16512 [2020-10-23 20:33:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-23 20:33:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2020-10-23 20:33:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-23 20:33:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 368 transitions. [2020-10-23 20:33:02,674 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 368 transitions. Word has length 621 [2020-10-23 20:33:02,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:02,674 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 368 transitions. [2020-10-23 20:33:02,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-23 20:33:02,675 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 368 transitions. [2020-10-23 20:33:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2020-10-23 20:33:02,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:02,678 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 60, 60, 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] [2020-10-23 20:33:02,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-23 20:33:02,678 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:02,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:02,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1917434343, now seen corresponding path program 60 times [2020-10-23 20:33:02,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:02,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812685074] [2020-10-23 20:33:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:02,685 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:02,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:02,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:33:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:03,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:03,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:03,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:04,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:04,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:04,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:04,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:05,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:05,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:05,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:05,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:05,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:06,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:06,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:06,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:06,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:06,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:07,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:07,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:07,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:07,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:07,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:10,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:10,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:10,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:10,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:10,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9030 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9030 trivial. 0 not checked. [2020-10-23 20:33:16,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812685074] [2020-10-23 20:33:16,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:16,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2020-10-23 20:33:16,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769889347] [2020-10-23 20:33:16,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-23 20:33:16,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:16,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-23 20:33:16,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1959, Invalid=2331, Unknown=0, NotChecked=0, Total=4290 [2020-10-23 20:33:16,327 INFO L87 Difference]: Start difference. First operand 354 states and 368 transitions. Second operand 66 states. [2020-10-23 20:33:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:22,099 INFO L93 Difference]: Finished difference Result 366 states and 380 transitions. [2020-10-23 20:33:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-23 20:33:22,100 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 631 [2020-10-23 20:33:22,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:22,103 INFO L225 Difference]: With dead ends: 366 [2020-10-23 20:33:22,103 INFO L226 Difference]: Without dead ends: 359 [2020-10-23 20:33:22,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3908 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=6124, Invalid=10906, Unknown=0, NotChecked=0, Total=17030 [2020-10-23 20:33:22,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-23 20:33:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2020-10-23 20:33:22,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-23 20:33:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 373 transitions. [2020-10-23 20:33:22,131 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 373 transitions. Word has length 631 [2020-10-23 20:33:22,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:22,131 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 373 transitions. [2020-10-23 20:33:22,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-23 20:33:22,131 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 373 transitions. [2020-10-23 20:33:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2020-10-23 20:33:22,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:22,135 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 61, 61, 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] [2020-10-23 20:33:22,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-23 20:33:22,135 INFO L429 AbstractCegarLoop]: === Iteration 63 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:22,135 INFO L82 PathProgramCache]: Analyzing trace with hash -392451415, now seen corresponding path program 61 times [2020-10-23 20:33:22,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:22,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568321521] [2020-10-23 20:33:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:22,141 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:33:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:23,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:23,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:23,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:23,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:23,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:24,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:24,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:24,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:24,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:24,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:25,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:25,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:25,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:26,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:26,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:26,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:26,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:26,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:26,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:27,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:28,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:28,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:28,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:28,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:28,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:28,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:29,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:30,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:30,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:30,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:30,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:30,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:30,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9333 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9333 trivial. 0 not checked. [2020-10-23 20:33:36,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568321521] [2020-10-23 20:33:36,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:36,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2020-10-23 20:33:36,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131633405] [2020-10-23 20:33:36,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-23 20:33:36,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:36,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-23 20:33:36,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2022, Invalid=2400, Unknown=0, NotChecked=0, Total=4422 [2020-10-23 20:33:36,548 INFO L87 Difference]: Start difference. First operand 359 states and 373 transitions. Second operand 67 states. [2020-10-23 20:33:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:42,519 INFO L93 Difference]: Finished difference Result 371 states and 385 transitions. [2020-10-23 20:33:42,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-23 20:33:42,520 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 641 [2020-10-23 20:33:42,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:42,523 INFO L225 Difference]: With dead ends: 371 [2020-10-23 20:33:42,523 INFO L226 Difference]: Without dead ends: 364 [2020-10-23 20:33:42,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4034 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=6317, Invalid=11239, Unknown=0, NotChecked=0, Total=17556 [2020-10-23 20:33:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-23 20:33:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-23 20:33:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-23 20:33:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 378 transitions. [2020-10-23 20:33:42,551 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 378 transitions. Word has length 641 [2020-10-23 20:33:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:42,552 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 378 transitions. [2020-10-23 20:33:42,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-23 20:33:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 378 transitions. [2020-10-23 20:33:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-10-23 20:33:42,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:42,556 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 62, 62, 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] [2020-10-23 20:33:42,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-23 20:33:42,556 INFO L429 AbstractCegarLoop]: === Iteration 64 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:42,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1758512601, now seen corresponding path program 62 times [2020-10-23 20:33:42,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:42,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720808535] [2020-10-23 20:33:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:42,565 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:42,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:33:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:43,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:43,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:43,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:43,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:44,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:44,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:44,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:45,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:45,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:45,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:46,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:46,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:46,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:46,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:46,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:46,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:48,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:48,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:48,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:49,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:49,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:49,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:49,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:49,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:49,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:49,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:49,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:50,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:50,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:50,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:50,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:50,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:50,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:50,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:50,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:51,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:51,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:33:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9641 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9641 trivial. 0 not checked. [2020-10-23 20:33:57,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720808535] [2020-10-23 20:33:57,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:57,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2020-10-23 20:33:57,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785708819] [2020-10-23 20:33:57,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-23 20:33:57,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:57,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-23 20:33:57,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2086, Invalid=2470, Unknown=0, NotChecked=0, Total=4556 [2020-10-23 20:33:57,439 INFO L87 Difference]: Start difference. First operand 364 states and 378 transitions. Second operand 68 states. [2020-10-23 20:34:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:34:04,188 INFO L93 Difference]: Finished difference Result 376 states and 390 transitions. [2020-10-23 20:34:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-23 20:34:04,189 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 651 [2020-10-23 20:34:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:34:04,193 INFO L225 Difference]: With dead ends: 376 [2020-10-23 20:34:04,193 INFO L226 Difference]: Without dead ends: 369 [2020-10-23 20:34:04,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4162 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=6513, Invalid=11577, Unknown=0, NotChecked=0, Total=18090 [2020-10-23 20:34:04,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-23 20:34:04,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2020-10-23 20:34:04,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-23 20:34:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 383 transitions. [2020-10-23 20:34:04,226 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 383 transitions. Word has length 651 [2020-10-23 20:34:04,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:34:04,227 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 383 transitions. [2020-10-23 20:34:04,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-23 20:34:04,227 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 383 transitions. [2020-10-23 20:34:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2020-10-23 20:34:04,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:34:04,232 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 63, 63, 63, 63, 63, 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] [2020-10-23 20:34:04,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-23 20:34:04,232 INFO L429 AbstractCegarLoop]: === Iteration 65 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:34:04,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:34:04,232 INFO L82 PathProgramCache]: Analyzing trace with hash 362954857, now seen corresponding path program 63 times [2020-10-23 20:34:04,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:34:04,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108370154] [2020-10-23 20:34:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:34:04,242 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:34:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:04,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:34:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:04,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:34:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:04,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:04,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:05,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:05,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:06,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:06,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:06,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:07,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:07,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:07,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:08,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:08,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:10,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:10,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:10,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:10,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:10,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:10,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:11,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:11,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:11,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:11,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:11,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:11,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:11,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:12,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:12,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:12,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:12,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:12,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:12,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:13,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:13,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:13,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:13,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:13,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:13,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9954 trivial. 0 not checked. [2020-10-23 20:34:20,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108370154] [2020-10-23 20:34:20,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:34:20,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2020-10-23 20:34:20,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967403506] [2020-10-23 20:34:20,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-23 20:34:20,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:34:20,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-23 20:34:20,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2151, Invalid=2541, Unknown=0, NotChecked=0, Total=4692 [2020-10-23 20:34:20,362 INFO L87 Difference]: Start difference. First operand 369 states and 383 transitions. Second operand 69 states. [2020-10-23 20:34:27,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:34:27,278 INFO L93 Difference]: Finished difference Result 381 states and 395 transitions. [2020-10-23 20:34:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-23 20:34:27,279 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 661 [2020-10-23 20:34:27,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:34:27,282 INFO L225 Difference]: With dead ends: 381 [2020-10-23 20:34:27,282 INFO L226 Difference]: Without dead ends: 374 [2020-10-23 20:34:27,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4292 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=6712, Invalid=11920, Unknown=0, NotChecked=0, Total=18632 [2020-10-23 20:34:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-10-23 20:34:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2020-10-23 20:34:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-23 20:34:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 388 transitions. [2020-10-23 20:34:27,314 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 388 transitions. Word has length 661 [2020-10-23 20:34:27,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:34:27,315 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 388 transitions. [2020-10-23 20:34:27,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-23 20:34:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 388 transitions. [2020-10-23 20:34:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2020-10-23 20:34:27,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:34:27,321 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 65, 64, 64, 64, 64, 64, 64, 64, 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] [2020-10-23 20:34:27,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-23 20:34:27,321 INFO L429 AbstractCegarLoop]: === Iteration 66 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:34:27,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:34:27,322 INFO L82 PathProgramCache]: Analyzing trace with hash -455824793, now seen corresponding path program 64 times [2020-10-23 20:34:27,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:34:27,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777423946] [2020-10-23 20:34:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:34:27,331 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:34:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:27,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:34:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:27,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:34:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:28,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:28,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:28,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:28,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:29,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:29,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:30,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:30,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:30,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:31,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:31,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:31,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:32,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:32,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:32,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:32,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:33,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:33,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:33,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:33,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:33,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:33,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:34,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:34,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:34,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:34,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:34,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:34,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:34,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:35,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:35,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:35,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:35,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:35,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:35,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:36,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:36,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:36,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:37,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 10272 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10272 trivial. 0 not checked. [2020-10-23 20:34:43,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777423946] [2020-10-23 20:34:43,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:34:43,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2020-10-23 20:34:43,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026553470] [2020-10-23 20:34:43,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-23 20:34:43,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:34:43,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-23 20:34:43,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2217, Invalid=2613, Unknown=0, NotChecked=0, Total=4830 [2020-10-23 20:34:43,930 INFO L87 Difference]: Start difference. First operand 374 states and 388 transitions. Second operand 70 states. [2020-10-23 20:34:50,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:34:50,500 INFO L93 Difference]: Finished difference Result 386 states and 400 transitions. [2020-10-23 20:34:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-23 20:34:50,501 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 671 [2020-10-23 20:34:50,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:34:50,504 INFO L225 Difference]: With dead ends: 386 [2020-10-23 20:34:50,504 INFO L226 Difference]: Without dead ends: 379 [2020-10-23 20:34:50,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4424 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=6914, Invalid=12268, Unknown=0, NotChecked=0, Total=19182 [2020-10-23 20:34:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-23 20:34:50,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2020-10-23 20:34:50,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-23 20:34:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 393 transitions. [2020-10-23 20:34:50,538 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 393 transitions. Word has length 671 [2020-10-23 20:34:50,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:34:50,539 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 393 transitions. [2020-10-23 20:34:50,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-23 20:34:50,539 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 393 transitions. [2020-10-23 20:34:50,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2020-10-23 20:34:50,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:34:50,543 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 65, 65, 65, 65, 65, 65, 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] [2020-10-23 20:34:50,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-23 20:34:50,543 INFO L429 AbstractCegarLoop]: === Iteration 67 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:34:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:34:50,543 INFO L82 PathProgramCache]: Analyzing trace with hash 605808169, now seen corresponding path program 65 times [2020-10-23 20:34:50,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:34:50,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59379525] [2020-10-23 20:34:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:34:50,550 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:34:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:34:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:50,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:34:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:51,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:51,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:52,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:52,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:52,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:52,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:53,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:53,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:53,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:53,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:54,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:54,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:54,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:55,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:55,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:55,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:55,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:55,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:56,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:56,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:56,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:56,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:56,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:57,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:57,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:57,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:57,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:57,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:57,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:58,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:58,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:58,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:58,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:58,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:58,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:59,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:59,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:59,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:34:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:00,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:00,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:00,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:00,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:00,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:00,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10595 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10595 trivial. 0 not checked. [2020-10-23 20:35:07,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59379525] [2020-10-23 20:35:07,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:07,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2020-10-23 20:35:07,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931634038] [2020-10-23 20:35:07,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-10-23 20:35:07,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:07,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-10-23 20:35:07,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2284, Invalid=2686, Unknown=0, NotChecked=0, Total=4970 [2020-10-23 20:35:07,991 INFO L87 Difference]: Start difference. First operand 379 states and 393 transitions. Second operand 71 states. [2020-10-23 20:35:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:15,288 INFO L93 Difference]: Finished difference Result 391 states and 405 transitions. [2020-10-23 20:35:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-23 20:35:15,289 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 681 [2020-10-23 20:35:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:15,292 INFO L225 Difference]: With dead ends: 391 [2020-10-23 20:35:15,292 INFO L226 Difference]: Without dead ends: 384 [2020-10-23 20:35:15,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4558 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=7119, Invalid=12621, Unknown=0, NotChecked=0, Total=19740 [2020-10-23 20:35:15,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-10-23 20:35:15,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2020-10-23 20:35:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-10-23 20:35:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 398 transitions. [2020-10-23 20:35:15,341 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 398 transitions. Word has length 681 [2020-10-23 20:35:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:15,341 INFO L481 AbstractCegarLoop]: Abstraction has 384 states and 398 transitions. [2020-10-23 20:35:15,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-10-23 20:35:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 398 transitions. [2020-10-23 20:35:15,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2020-10-23 20:35:15,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:15,348 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 67, 66, 66, 66, 66, 66, 66, 66, 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] [2020-10-23 20:35:15,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-23 20:35:15,348 INFO L429 AbstractCegarLoop]: === Iteration 68 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:15,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:15,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1511126361, now seen corresponding path program 66 times [2020-10-23 20:35:15,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:15,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366914507] [2020-10-23 20:35:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:15,359 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:15,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:35:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:16,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:17,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:17,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:17,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:18,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:18,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:18,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:19,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:19,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:19,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:19,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:20,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:20,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:20,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:20,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:20,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:21,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:21,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:21,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:22,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:22,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:22,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:22,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:22,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:22,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:22,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:23,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:23,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:23,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:23,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:23,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:24,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:24,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:24,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:24,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:24,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:25,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10923 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10923 trivial. 0 not checked. [2020-10-23 20:35:33,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366914507] [2020-10-23 20:35:33,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:33,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2020-10-23 20:35:33,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425175739] [2020-10-23 20:35:33,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-23 20:35:33,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:33,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-23 20:35:33,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2352, Invalid=2760, Unknown=0, NotChecked=0, Total=5112 [2020-10-23 20:35:33,428 INFO L87 Difference]: Start difference. First operand 384 states and 398 transitions. Second operand 72 states. [2020-10-23 20:35:40,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:40,366 INFO L93 Difference]: Finished difference Result 396 states and 410 transitions. [2020-10-23 20:35:40,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-23 20:35:40,367 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 691 [2020-10-23 20:35:40,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:40,370 INFO L225 Difference]: With dead ends: 396 [2020-10-23 20:35:40,370 INFO L226 Difference]: Without dead ends: 389 [2020-10-23 20:35:40,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4694 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=7327, Invalid=12979, Unknown=0, NotChecked=0, Total=20306 [2020-10-23 20:35:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-23 20:35:40,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2020-10-23 20:35:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-23 20:35:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 403 transitions. [2020-10-23 20:35:40,402 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 403 transitions. Word has length 691 [2020-10-23 20:35:40,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:40,403 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 403 transitions. [2020-10-23 20:35:40,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-23 20:35:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 403 transitions. [2020-10-23 20:35:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2020-10-23 20:35:40,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:40,407 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 67, 67, 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] [2020-10-23 20:35:40,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-23 20:35:40,408 INFO L429 AbstractCegarLoop]: === Iteration 69 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:40,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:40,408 INFO L82 PathProgramCache]: Analyzing trace with hash 424975337, now seen corresponding path program 67 times [2020-10-23 20:35:40,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:40,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458296840] [2020-10-23 20:35:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:40,415 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:40,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:40,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:35:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:40,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:41,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:41,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:41,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:41,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:42,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:42,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:42,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:42,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:43,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:43,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:43,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:44,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:44,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:44,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:45,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:45,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:45,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:45,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:45,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:46,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:46,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:46,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:46,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:46,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:47,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:47,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:47,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:47,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:47,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:47,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:48,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:48,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:48,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:48,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:48,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:50,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:50,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:50,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:50,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:50,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:50,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:51,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:51,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:35:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 11256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11256 trivial. 0 not checked. [2020-10-23 20:35:59,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458296840] [2020-10-23 20:35:59,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:59,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2020-10-23 20:35:59,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982978758] [2020-10-23 20:35:59,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-23 20:35:59,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:59,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-23 20:35:59,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2421, Invalid=2835, Unknown=0, NotChecked=0, Total=5256 [2020-10-23 20:35:59,122 INFO L87 Difference]: Start difference. First operand 389 states and 403 transitions. Second operand 73 states. [2020-10-23 20:36:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:36:06,822 INFO L93 Difference]: Finished difference Result 401 states and 415 transitions. [2020-10-23 20:36:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-23 20:36:06,823 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 701 [2020-10-23 20:36:06,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:36:06,826 INFO L225 Difference]: With dead ends: 401 [2020-10-23 20:36:06,826 INFO L226 Difference]: Without dead ends: 394 [2020-10-23 20:36:06,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4832 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=7538, Invalid=13342, Unknown=0, NotChecked=0, Total=20880 [2020-10-23 20:36:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-23 20:36:06,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-10-23 20:36:06,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-23 20:36:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 408 transitions. [2020-10-23 20:36:06,865 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 408 transitions. Word has length 701 [2020-10-23 20:36:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:36:06,865 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 408 transitions. [2020-10-23 20:36:06,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-10-23 20:36:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 408 transitions. [2020-10-23 20:36:06,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2020-10-23 20:36:06,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:36:06,870 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 68, 68, 68, 68, 68, 68, 68, 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] [2020-10-23 20:36:06,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-23 20:36:06,870 INFO L429 AbstractCegarLoop]: === Iteration 70 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:36:06,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:36:06,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1540400409, now seen corresponding path program 68 times [2020-10-23 20:36:06,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:36:06,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158344119] [2020-10-23 20:36:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:36:06,877 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:36:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:07,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:36:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:36:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:07,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:07,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:07,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:08,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:08,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:08,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:09,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:09,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:09,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:09,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:10,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:10,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:11,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:11,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:11,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:12,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:12,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:13,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:13,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:13,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:13,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:14,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:14,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:14,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:14,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:14,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:14,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:15,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:15,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:15,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:15,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:15,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:16,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:16,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:16,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:16,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:16,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:16,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:17,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:17,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:17,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:17,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:17,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:18,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:18,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:18,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11594 trivial. 0 not checked. [2020-10-23 20:36:26,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158344119] [2020-10-23 20:36:26,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:36:26,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2020-10-23 20:36:26,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672514757] [2020-10-23 20:36:26,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-23 20:36:26,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:36:26,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-23 20:36:26,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2491, Invalid=2911, Unknown=0, NotChecked=0, Total=5402 [2020-10-23 20:36:26,464 INFO L87 Difference]: Start difference. First operand 394 states and 408 transitions. Second operand 74 states. [2020-10-23 20:36:34,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:36:34,222 INFO L93 Difference]: Finished difference Result 406 states and 420 transitions. [2020-10-23 20:36:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-23 20:36:34,223 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 711 [2020-10-23 20:36:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:36:34,226 INFO L225 Difference]: With dead ends: 406 [2020-10-23 20:36:34,227 INFO L226 Difference]: Without dead ends: 399 [2020-10-23 20:36:34,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4972 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=7752, Invalid=13710, Unknown=0, NotChecked=0, Total=21462 [2020-10-23 20:36:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-23 20:36:34,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2020-10-23 20:36:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-23 20:36:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 413 transitions. [2020-10-23 20:36:34,267 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 413 transitions. Word has length 711 [2020-10-23 20:36:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:36:34,267 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 413 transitions. [2020-10-23 20:36:34,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-23 20:36:34,268 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 413 transitions. [2020-10-23 20:36:34,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2020-10-23 20:36:34,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:36:34,273 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 69, 69, 69, 69, 69, 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] [2020-10-23 20:36:34,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-23 20:36:34,273 INFO L429 AbstractCegarLoop]: === Iteration 71 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:36:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:36:34,273 INFO L82 PathProgramCache]: Analyzing trace with hash 462971305, now seen corresponding path program 69 times [2020-10-23 20:36:34,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:36:34,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018484825] [2020-10-23 20:36:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:36:34,281 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:36:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:34,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:36:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:34,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:36:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:34,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:35,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:35,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:36,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:37,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:37,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:38,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:38,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:38,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:39,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:39,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:39,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:39,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:40,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:40,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:40,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:40,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:41,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:41,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:41,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:41,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:41,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:41,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:42,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:42,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:42,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:42,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:43,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:43,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:43,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:43,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:43,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:43,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:43,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:43,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:44,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:44,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:44,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:44,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:45,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:45,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:45,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:45,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:45,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:45,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:36:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:36:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11937 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11937 trivial. 0 not checked. [2020-10-23 20:36:54,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018484825] [2020-10-23 20:36:54,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:36:54,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2020-10-23 20:36:54,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183872639] [2020-10-23 20:36:54,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-10-23 20:36:54,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:36:54,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-10-23 20:36:54,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2562, Invalid=2988, Unknown=0, NotChecked=0, Total=5550 [2020-10-23 20:36:54,798 INFO L87 Difference]: Start difference. First operand 399 states and 413 transitions. Second operand 75 states. [2020-10-23 20:37:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:02,757 INFO L93 Difference]: Finished difference Result 411 states and 425 transitions. [2020-10-23 20:37:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-23 20:37:02,758 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 721 [2020-10-23 20:37:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:02,762 INFO L225 Difference]: With dead ends: 411 [2020-10-23 20:37:02,763 INFO L226 Difference]: Without dead ends: 404 [2020-10-23 20:37:02,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5114 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=7969, Invalid=14083, Unknown=0, NotChecked=0, Total=22052 [2020-10-23 20:37:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-23 20:37:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2020-10-23 20:37:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-23 20:37:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 418 transitions. [2020-10-23 20:37:02,815 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 418 transitions. Word has length 721 [2020-10-23 20:37:02,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:02,816 INFO L481 AbstractCegarLoop]: Abstraction has 404 states and 418 transitions. [2020-10-23 20:37:02,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-10-23 20:37:02,816 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 418 transitions. [2020-10-23 20:37:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2020-10-23 20:37:02,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:02,823 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 70, 70, 70, 70, 70, 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] [2020-10-23 20:37:02,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-23 20:37:02,823 INFO L429 AbstractCegarLoop]: === Iteration 72 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:02,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:02,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1749850919, now seen corresponding path program 70 times [2020-10-23 20:37:02,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:02,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87293866] [2020-10-23 20:37:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:02,835 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:03,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:03,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:37:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:03,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:04,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:04,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:05,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:05,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:05,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:06,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:06,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:06,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:07,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:07,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:07,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:08,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:08,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:08,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:08,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:08,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:09,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:09,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:09,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:09,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:09,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:10,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:10,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:10,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:11,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:11,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:11,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:12,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:12,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:12,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:12,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:12,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:12,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:13,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:13,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:13,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:13,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:13,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:13,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:13,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:14,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:14,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:14,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:14,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:14,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:14,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:15,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:15,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:15,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12285 trivial. 0 not checked. [2020-10-23 20:37:24,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87293866] [2020-10-23 20:37:24,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:24,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2020-10-23 20:37:24,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736735264] [2020-10-23 20:37:24,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-23 20:37:24,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:24,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-23 20:37:24,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2634, Invalid=3066, Unknown=0, NotChecked=0, Total=5700 [2020-10-23 20:37:24,268 INFO L87 Difference]: Start difference. First operand 404 states and 418 transitions. Second operand 76 states. [2020-10-23 20:37:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:37:32,480 INFO L93 Difference]: Finished difference Result 416 states and 430 transitions. [2020-10-23 20:37:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-23 20:37:32,481 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 731 [2020-10-23 20:37:32,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:37:32,491 INFO L225 Difference]: With dead ends: 416 [2020-10-23 20:37:32,491 INFO L226 Difference]: Without dead ends: 409 [2020-10-23 20:37:32,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5258 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=8189, Invalid=14461, Unknown=0, NotChecked=0, Total=22650 [2020-10-23 20:37:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-23 20:37:32,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2020-10-23 20:37:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-10-23 20:37:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 423 transitions. [2020-10-23 20:37:32,543 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 423 transitions. Word has length 731 [2020-10-23 20:37:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:37:32,543 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 423 transitions. [2020-10-23 20:37:32,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-23 20:37:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 423 transitions. [2020-10-23 20:37:32,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2020-10-23 20:37:32,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:37:32,551 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 71, 71, 71, 71, 71, 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] [2020-10-23 20:37:32,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-23 20:37:32,551 INFO L429 AbstractCegarLoop]: === Iteration 73 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:37:32,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:37:32,551 INFO L82 PathProgramCache]: Analyzing trace with hash 842217321, now seen corresponding path program 71 times [2020-10-23 20:37:32,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:37:32,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427025088] [2020-10-23 20:37:32,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:37:32,562 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:37:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:37:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:37:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:33,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:34,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:34,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:34,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:35,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:35,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:35,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:36,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:36,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:37,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:37,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:37,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:37,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:38,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:38,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:38,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:38,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:39,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:39,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:39,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:40,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:40,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:40,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:40,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:40,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:40,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:41,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:41,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:41,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:41,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:41,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:42,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:42,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:43,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:43,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:43,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:43,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:43,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:44,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:44,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:44,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:44,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:44,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:45,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:45,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:45,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:45,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:37:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:37:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 12638 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12638 trivial. 0 not checked. [2020-10-23 20:37:55,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427025088] [2020-10-23 20:37:55,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:37:55,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2020-10-23 20:37:55,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902252061] [2020-10-23 20:37:55,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-10-23 20:37:55,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:37:55,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-10-23 20:37:55,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=3145, Unknown=0, NotChecked=0, Total=5852 [2020-10-23 20:37:55,098 INFO L87 Difference]: Start difference. First operand 409 states and 423 transitions. Second operand 77 states. [2020-10-23 20:38:03,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:03,725 INFO L93 Difference]: Finished difference Result 421 states and 435 transitions. [2020-10-23 20:38:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-23 20:38:03,726 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 741 [2020-10-23 20:38:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:03,729 INFO L225 Difference]: With dead ends: 421 [2020-10-23 20:38:03,730 INFO L226 Difference]: Without dead ends: 414 [2020-10-23 20:38:03,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5404 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=8412, Invalid=14844, Unknown=0, NotChecked=0, Total=23256 [2020-10-23 20:38:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-23 20:38:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2020-10-23 20:38:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-23 20:38:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 428 transitions. [2020-10-23 20:38:03,781 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 428 transitions. Word has length 741 [2020-10-23 20:38:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:03,781 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 428 transitions. [2020-10-23 20:38:03,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-10-23 20:38:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 428 transitions. [2020-10-23 20:38:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2020-10-23 20:38:03,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:03,788 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 72, 72, 72, 72, 72, 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] [2020-10-23 20:38:03,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-23 20:38:03,789 INFO L429 AbstractCegarLoop]: === Iteration 74 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:03,789 INFO L82 PathProgramCache]: Analyzing trace with hash 2046413671, now seen corresponding path program 72 times [2020-10-23 20:38:03,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:03,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462729345] [2020-10-23 20:38:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:03,800 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:04,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:04,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:38:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:04,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:05,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:05,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:05,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:05,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:06,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:06,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:06,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:07,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:07,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:07,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:08,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:08,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:08,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:09,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:09,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:09,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:09,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:09,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:10,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:10,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:11,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:11,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:11,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:11,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:11,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:11,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:12,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:12,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:12,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:12,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:12,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:12,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:13,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:13,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:13,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:13,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:14,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:14,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:15,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:15,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:15,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:15,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:15,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:15,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:16,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:16,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:16,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:16,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:16,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:17,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:17,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:17,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12996 trivial. 0 not checked. [2020-10-23 20:38:26,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462729345] [2020-10-23 20:38:26,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:38:26,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2020-10-23 20:38:26,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079548698] [2020-10-23 20:38:26,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-23 20:38:26,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:38:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-23 20:38:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2781, Invalid=3225, Unknown=0, NotChecked=0, Total=6006 [2020-10-23 20:38:26,891 INFO L87 Difference]: Start difference. First operand 414 states and 428 transitions. Second operand 78 states. [2020-10-23 20:38:35,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:38:35,419 INFO L93 Difference]: Finished difference Result 426 states and 440 transitions. [2020-10-23 20:38:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-23 20:38:35,420 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 751 [2020-10-23 20:38:35,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:38:35,423 INFO L225 Difference]: With dead ends: 426 [2020-10-23 20:38:35,424 INFO L226 Difference]: Without dead ends: 419 [2020-10-23 20:38:35,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=8638, Invalid=15232, Unknown=0, NotChecked=0, Total=23870 [2020-10-23 20:38:35,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-10-23 20:38:35,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2020-10-23 20:38:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-10-23 20:38:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 433 transitions. [2020-10-23 20:38:35,466 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 433 transitions. Word has length 751 [2020-10-23 20:38:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:38:35,467 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 433 transitions. [2020-10-23 20:38:35,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-23 20:38:35,467 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 433 transitions. [2020-10-23 20:38:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2020-10-23 20:38:35,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:38:35,471 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 73, 73, 73, 73, 73, 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] [2020-10-23 20:38:35,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-23 20:38:35,472 INFO L429 AbstractCegarLoop]: === Iteration 75 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:38:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:38:35,472 INFO L82 PathProgramCache]: Analyzing trace with hash 91299113, now seen corresponding path program 73 times [2020-10-23 20:38:35,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:38:35,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078134650] [2020-10-23 20:38:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:38:35,479 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:38:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:35,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:38:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:35,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:38:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:36,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:36,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:36,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:37,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:37,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:37,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:38,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:39,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:39,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:39,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:40,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:40,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:40,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:40,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:40,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:41,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:41,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:42,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:42,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:42,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:42,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:43,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:43,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:44,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:44,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:44,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:45,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:45,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:45,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:46,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:46,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:46,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:46,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:46,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:47,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:47,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:47,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:47,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:47,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:48,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:48,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:48,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:48,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:48,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:48,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:38:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-23 20:38:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat