/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:36:24,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:36:24,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:36:24,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:36:24,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:36:24,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:36:24,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:36:24,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:36:24,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:36:24,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:36:24,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:36:24,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:36:24,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:36:24,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:36:24,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:36:24,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:36:24,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:36:24,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:36:24,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:36:24,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:36:24,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:36:24,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:36:24,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:36:24,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:36:24,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 15:36:24,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:36:24,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:36:24,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:36:24,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:36:24,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:36:24,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:36:24,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:36:24,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:36:24,524 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:36:24,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:36:24,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:36:24,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:36:24,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:36:24,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:36:24,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:36:24,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:36:24,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:36:24,527 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:36:24,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:36:24,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:36:24,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:36:24,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:36:24,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:36:24,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:36:24,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:36:24,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:36:24,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:36:24,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:36:24,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:36:24,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:36:24,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:36:24,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:36:24,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:36:24,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 15:36:24,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:36:24,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:36:24,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:36:24,872 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:36:24,873 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:36:24,874 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-18 15:36:24,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c48d7ee6/38203badca1741d59cfc9c0c6feada04/FLAGef143b8cb [2020-08-18 15:36:25,349 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:36:25,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-18 15:36:25,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c48d7ee6/38203badca1741d59cfc9c0c6feada04/FLAGef143b8cb [2020-08-18 15:36:25,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c48d7ee6/38203badca1741d59cfc9c0c6feada04 [2020-08-18 15:36:25,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:36:25,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:36:25,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:36:25,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:36:25,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:36:25,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:36:25" (1/1) ... [2020-08-18 15:36:25,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe964b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25, skipping insertion in model container [2020-08-18 15:36:25,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:36:25" (1/1) ... [2020-08-18 15:36:25,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:36:25,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:36:25,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:36:25,920 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:36:25,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:36:25,966 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:36:25,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25 WrapperNode [2020-08-18 15:36:25,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:36:25,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:36:25,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:36:25,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:36:25,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25" (1/1) ... [2020-08-18 15:36:25,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25" (1/1) ... [2020-08-18 15:36:25,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25" (1/1) ... [2020-08-18 15:36:25,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25" (1/1) ... [2020-08-18 15:36:25,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25" (1/1) ... [2020-08-18 15:36:26,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25" (1/1) ... [2020-08-18 15:36:26,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25" (1/1) ... [2020-08-18 15:36:26,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:36:26,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:36:26,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:36:26,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:36:26,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 15:36:26,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:36:26,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:36:26,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 15:36:26,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 15:36:26,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:36:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:36:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 15:36:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 15:36:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 15:36:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:36:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:36:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:36:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:36:26,397 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:36:26,397 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 15:36:26,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:36:26 BoogieIcfgContainer [2020-08-18 15:36:26,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:36:26,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:36:26,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:36:26,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:36:26,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:36:25" (1/3) ... [2020-08-18 15:36:26,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f79af32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:36:26, skipping insertion in model container [2020-08-18 15:36:26,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:36:25" (2/3) ... [2020-08-18 15:36:26,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f79af32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:36:26, skipping insertion in model container [2020-08-18 15:36:26,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:36:26" (3/3) ... [2020-08-18 15:36:26,411 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-08-18 15:36:26,424 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:36:26,431 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:36:26,447 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:36:26,476 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:36:26,476 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:36:26,476 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:36:26,477 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:36:26,477 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:36:26,477 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:36:26,477 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:36:26,477 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:36:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-18 15:36:26,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 15:36:26,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:26,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:26,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:26,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1671060194, now seen corresponding path program 1 times [2020-08-18 15:36:26,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:26,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244972001] [2020-08-18 15:36:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:26,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:36:26,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244972001] [2020-08-18 15:36:26,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:26,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:36:26,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831985110] [2020-08-18 15:36:26,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:36:26,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:26,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:36:26,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:36:26,828 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 8 states. [2020-08-18 15:36:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:27,287 INFO L93 Difference]: Finished difference Result 68 states and 95 transitions. [2020-08-18 15:36:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:36:27,290 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-18 15:36:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:27,304 INFO L225 Difference]: With dead ends: 68 [2020-08-18 15:36:27,304 INFO L226 Difference]: Without dead ends: 36 [2020-08-18 15:36:27,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:36:27,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-18 15:36:27,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-08-18 15:36:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 15:36:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-18 15:36:27,371 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2020-08-18 15:36:27,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:27,372 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-18 15:36:27,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:36:27,372 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-18 15:36:27,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 15:36:27,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:27,374 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] [2020-08-18 15:36:27,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:36:27,375 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:27,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:27,375 INFO L82 PathProgramCache]: Analyzing trace with hash -764881689, now seen corresponding path program 1 times [2020-08-18 15:36:27,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:27,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248366647] [2020-08-18 15:36:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:27,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:36:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 15:36:27,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248366647] [2020-08-18 15:36:27,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:27,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:36:27,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396981258] [2020-08-18 15:36:27,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:27,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:27,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:27,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:27,463 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2020-08-18 15:36:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:27,625 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-08-18 15:36:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:36:27,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-18 15:36:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:27,630 INFO L225 Difference]: With dead ends: 57 [2020-08-18 15:36:27,630 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 15:36:27,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:36:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 15:36:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-18 15:36:27,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-18 15:36:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-18 15:36:27,641 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2020-08-18 15:36:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:27,642 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-18 15:36:27,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:27,642 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-18 15:36:27,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 15:36:27,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:27,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:27,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:36:27,644 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:27,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:27,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1134636734, now seen corresponding path program 1 times [2020-08-18 15:36:27,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:27,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012690024] [2020-08-18 15:36:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:27,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:36:27,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012690024] [2020-08-18 15:36:27,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:27,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 15:36:27,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764564500] [2020-08-18 15:36:27,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:36:27,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:27,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:36:27,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:36:27,776 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-08-18 15:36:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:28,002 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-08-18 15:36:28,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:36:28,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-08-18 15:36:28,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:28,004 INFO L225 Difference]: With dead ends: 70 [2020-08-18 15:36:28,004 INFO L226 Difference]: Without dead ends: 51 [2020-08-18 15:36:28,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:36:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-18 15:36:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2020-08-18 15:36:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 15:36:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-08-18 15:36:28,021 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 28 [2020-08-18 15:36:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:28,022 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-08-18 15:36:28,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:36:28,022 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-08-18 15:36:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 15:36:28,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:28,025 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:28,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:36:28,025 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:28,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:28,026 INFO L82 PathProgramCache]: Analyzing trace with hash 83931911, now seen corresponding path program 2 times [2020-08-18 15:36:28,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:28,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247909640] [2020-08-18 15:36:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 15:36:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 15:36:28,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247909640] [2020-08-18 15:36:28,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:28,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 15:36:28,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701832278] [2020-08-18 15:36:28,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:36:28,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:28,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:36:28,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:36:28,090 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-08-18 15:36:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:28,195 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-08-18 15:36:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:36:28,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-08-18 15:36:28,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:28,197 INFO L225 Difference]: With dead ends: 63 [2020-08-18 15:36:28,197 INFO L226 Difference]: Without dead ends: 44 [2020-08-18 15:36:28,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:36:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-18 15:36:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-18 15:36:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 15:36:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-08-18 15:36:28,209 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-08-18 15:36:28,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:28,210 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-08-18 15:36:28,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:36:28,210 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-08-18 15:36:28,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 15:36:28,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:28,212 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:28,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:36:28,213 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:28,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:28,213 INFO L82 PathProgramCache]: Analyzing trace with hash 848296232, now seen corresponding path program 1 times [2020-08-18 15:36:28,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:28,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860244905] [2020-08-18 15:36:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 15:36:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 15:36:28,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860244905] [2020-08-18 15:36:28,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:36:28,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:36:28,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584499930] [2020-08-18 15:36:28,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:36:28,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:28,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:36:28,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:36:28,290 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2020-08-18 15:36:28,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:28,372 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-08-18 15:36:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:36:28,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-18 15:36:28,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:28,373 INFO L225 Difference]: With dead ends: 75 [2020-08-18 15:36:28,374 INFO L226 Difference]: Without dead ends: 42 [2020-08-18 15:36:28,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:36:28,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-18 15:36:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-18 15:36:28,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 15:36:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-18 15:36:28,393 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2020-08-18 15:36:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:28,394 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-18 15:36:28,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:36:28,394 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-18 15:36:28,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-18 15:36:28,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:28,401 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-18 15:36:28,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:36:28,402 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:28,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:28,403 INFO L82 PathProgramCache]: Analyzing trace with hash -670641491, now seen corresponding path program 2 times [2020-08-18 15:36:28,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:28,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830986798] [2020-08-18 15:36:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 15:36:28,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830986798] [2020-08-18 15:36:28,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:28,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:36:28,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867434981] [2020-08-18 15:36:28,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:36:28,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:28,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:36:28,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:36:28,587 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-08-18 15:36:28,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:28,851 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-08-18 15:36:28,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:36:28,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-08-18 15:36:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:28,853 INFO L225 Difference]: With dead ends: 60 [2020-08-18 15:36:28,853 INFO L226 Difference]: Without dead ends: 58 [2020-08-18 15:36:28,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:36:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-18 15:36:28,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-08-18 15:36:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-18 15:36:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-08-18 15:36:28,866 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 41 [2020-08-18 15:36:28,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:28,867 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-08-18 15:36:28,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:36:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-08-18 15:36:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 15:36:28,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:28,868 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:28,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:36:28,869 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash 2015935239, now seen corresponding path program 3 times [2020-08-18 15:36:28,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:28,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346249218] [2020-08-18 15:36:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:36:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 15:36:28,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346249218] [2020-08-18 15:36:28,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:28,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:36:28,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112246997] [2020-08-18 15:36:28,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:36:28,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:28,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:36:28,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:36:28,982 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 10 states. [2020-08-18 15:36:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:29,195 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-08-18 15:36:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:36:29,195 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-08-18 15:36:29,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:29,197 INFO L225 Difference]: With dead ends: 74 [2020-08-18 15:36:29,198 INFO L226 Difference]: Without dead ends: 72 [2020-08-18 15:36:29,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:36:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-18 15:36:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-08-18 15:36:29,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-18 15:36:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-08-18 15:36:29,210 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 51 [2020-08-18 15:36:29,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:29,211 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-08-18 15:36:29,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:36:29,211 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-08-18 15:36:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 15:36:29,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:29,213 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:29,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:36:29,213 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:29,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:29,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1770393310, now seen corresponding path program 4 times [2020-08-18 15:36:29,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:29,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394898205] [2020-08-18 15:36:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:36:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-18 15:36:29,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394898205] [2020-08-18 15:36:29,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:29,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 15:36:29,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831101276] [2020-08-18 15:36:29,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:36:29,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:29,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:36:29,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:36:29,302 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 9 states. [2020-08-18 15:36:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:29,489 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-08-18 15:36:29,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:36:29,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-18 15:36:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:29,490 INFO L225 Difference]: With dead ends: 97 [2020-08-18 15:36:29,490 INFO L226 Difference]: Without dead ends: 61 [2020-08-18 15:36:29,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:36:29,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-18 15:36:29,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-18 15:36:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-18 15:36:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-08-18 15:36:29,502 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 58 [2020-08-18 15:36:29,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:29,503 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-08-18 15:36:29,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:36:29,503 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-08-18 15:36:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 15:36:29,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:29,505 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:29,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:36:29,505 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:29,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:29,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1336799475, now seen corresponding path program 5 times [2020-08-18 15:36:29,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:29,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309173279] [2020-08-18 15:36:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-08-18 15:36:29,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309173279] [2020-08-18 15:36:29,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:29,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:36:29,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795993454] [2020-08-18 15:36:29,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:36:29,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:29,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:36:29,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:36:29,670 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 12 states. [2020-08-18 15:36:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:29,980 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-08-18 15:36:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 15:36:29,980 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-08-18 15:36:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:29,982 INFO L225 Difference]: With dead ends: 90 [2020-08-18 15:36:29,982 INFO L226 Difference]: Without dead ends: 88 [2020-08-18 15:36:29,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2020-08-18 15:36:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-18 15:36:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2020-08-18 15:36:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-18 15:36:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-08-18 15:36:29,995 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 65 [2020-08-18 15:36:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:29,995 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-08-18 15:36:29,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:36:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-08-18 15:36:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-18 15:36:29,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:29,997 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:29,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:36:29,997 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:29,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:29,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1858831946, now seen corresponding path program 6 times [2020-08-18 15:36:29,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:29,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279358705] [2020-08-18 15:36:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-08-18 15:36:30,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279358705] [2020-08-18 15:36:30,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:30,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:36:30,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455719764] [2020-08-18 15:36:30,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:36:30,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:30,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:36:30,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:36:30,134 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 12 states. [2020-08-18 15:36:30,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:30,543 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2020-08-18 15:36:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 15:36:30,544 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-18 15:36:30,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:30,545 INFO L225 Difference]: With dead ends: 141 [2020-08-18 15:36:30,545 INFO L226 Difference]: Without dead ends: 96 [2020-08-18 15:36:30,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2020-08-18 15:36:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-18 15:36:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-08-18 15:36:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-18 15:36:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-08-18 15:36:30,575 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 72 [2020-08-18 15:36:30,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:30,577 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-08-18 15:36:30,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:36:30,577 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-08-18 15:36:30,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 15:36:30,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:30,585 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:30,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:36:30,585 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:30,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:30,586 INFO L82 PathProgramCache]: Analyzing trace with hash 179803111, now seen corresponding path program 7 times [2020-08-18 15:36:30,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:30,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988404440] [2020-08-18 15:36:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 15:36:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 15:36:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 15:36:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 162 proven. 49 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-08-18 15:36:30,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988404440] [2020-08-18 15:36:30,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:30,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 15:36:30,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973138473] [2020-08-18 15:36:30,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:36:30,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:30,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:36:30,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:36:30,836 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 11 states. [2020-08-18 15:36:31,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:31,144 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2020-08-18 15:36:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:36:31,146 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 109 [2020-08-18 15:36:31,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:31,147 INFO L225 Difference]: With dead ends: 155 [2020-08-18 15:36:31,148 INFO L226 Difference]: Without dead ends: 98 [2020-08-18 15:36:31,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2020-08-18 15:36:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-18 15:36:31,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-08-18 15:36:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-18 15:36:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-18 15:36:31,174 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 109 [2020-08-18 15:36:31,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:31,175 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-18 15:36:31,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:36:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-18 15:36:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 15:36:31,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:31,178 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:31,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:36:31,179 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:31,179 INFO L82 PathProgramCache]: Analyzing trace with hash -888781782, now seen corresponding path program 8 times [2020-08-18 15:36:31,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:31,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824351710] [2020-08-18 15:36:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 15:36:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 182 proven. 62 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-08-18 15:36:31,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824351710] [2020-08-18 15:36:31,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:31,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 15:36:31,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295487243] [2020-08-18 15:36:31,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:36:31,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:31,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:36:31,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:36:31,361 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 11 states. [2020-08-18 15:36:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:31,642 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2020-08-18 15:36:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 15:36:31,643 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-08-18 15:36:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:31,644 INFO L225 Difference]: With dead ends: 178 [2020-08-18 15:36:31,644 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 15:36:31,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2020-08-18 15:36:31,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 15:36:31,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-08-18 15:36:31,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 15:36:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2020-08-18 15:36:31,661 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 116 [2020-08-18 15:36:31,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:31,661 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2020-08-18 15:36:31,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:36:31,661 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2020-08-18 15:36:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-18 15:36:31,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:31,663 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:31,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 15:36:31,663 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:31,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1465957677, now seen corresponding path program 9 times [2020-08-18 15:36:31,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:31,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349865030] [2020-08-18 15:36:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 70 proven. 217 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-08-18 15:36:31,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349865030] [2020-08-18 15:36:31,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:31,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 15:36:31,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059803046] [2020-08-18 15:36:31,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 15:36:31,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:31,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 15:36:31,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:36:31,871 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 14 states. [2020-08-18 15:36:32,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:32,295 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2020-08-18 15:36:32,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:36:32,296 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 123 [2020-08-18 15:36:32,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:32,297 INFO L225 Difference]: With dead ends: 136 [2020-08-18 15:36:32,297 INFO L226 Difference]: Without dead ends: 134 [2020-08-18 15:36:32,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-08-18 15:36:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-18 15:36:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2020-08-18 15:36:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 15:36:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-08-18 15:36:32,322 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 123 [2020-08-18 15:36:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:32,323 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-08-18 15:36:32,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 15:36:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-08-18 15:36:32,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 15:36:32,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:32,327 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:32,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 15:36:32,328 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:32,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:32,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1688384554, now seen corresponding path program 10 times [2020-08-18 15:36:32,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:32,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948358215] [2020-08-18 15:36:32,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 61 proven. 271 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-08-18 15:36:32,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948358215] [2020-08-18 15:36:32,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:32,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 15:36:32,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529358428] [2020-08-18 15:36:32,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 15:36:32,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:32,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 15:36:32,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:36:32,542 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 14 states. [2020-08-18 15:36:33,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:33,250 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2020-08-18 15:36:33,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 15:36:33,250 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2020-08-18 15:36:33,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:33,255 INFO L225 Difference]: With dead ends: 234 [2020-08-18 15:36:33,256 INFO L226 Difference]: Without dead ends: 171 [2020-08-18 15:36:33,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=462, Invalid=1178, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 15:36:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-18 15:36:33,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 153. [2020-08-18 15:36:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 15:36:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2020-08-18 15:36:33,285 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 130 [2020-08-18 15:36:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:33,285 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2020-08-18 15:36:33,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 15:36:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2020-08-18 15:36:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 15:36:33,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:33,288 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:33,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 15:36:33,288 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:33,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:33,289 INFO L82 PathProgramCache]: Analyzing trace with hash -840848228, now seen corresponding path program 11 times [2020-08-18 15:36:33,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:33,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104423904] [2020-08-18 15:36:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 15:36:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 284 proven. 205 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2020-08-18 15:36:33,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104423904] [2020-08-18 15:36:33,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:33,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 15:36:33,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505644013] [2020-08-18 15:36:33,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:36:33,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:33,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:36:33,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:36:33,503 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand 13 states. [2020-08-18 15:36:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:33,944 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2020-08-18 15:36:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 15:36:33,945 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-18 15:36:33,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:33,947 INFO L225 Difference]: With dead ends: 218 [2020-08-18 15:36:33,947 INFO L226 Difference]: Without dead ends: 155 [2020-08-18 15:36:33,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2020-08-18 15:36:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-18 15:36:33,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-08-18 15:36:33,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 15:36:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2020-08-18 15:36:33,967 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 154 [2020-08-18 15:36:33,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:33,967 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2020-08-18 15:36:33,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 15:36:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2020-08-18 15:36:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-18 15:36:33,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:33,970 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:33,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 15:36:33,970 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:33,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:33,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1311982393, now seen corresponding path program 12 times [2020-08-18 15:36:33,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:33,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353226957] [2020-08-18 15:36:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 80 proven. 422 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2020-08-18 15:36:34,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353226957] [2020-08-18 15:36:34,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:34,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 15:36:34,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650517926] [2020-08-18 15:36:34,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 15:36:34,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:34,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 15:36:34,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:36:34,224 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand 15 states. [2020-08-18 15:36:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:34,869 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2020-08-18 15:36:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 15:36:34,870 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 161 [2020-08-18 15:36:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:34,872 INFO L225 Difference]: With dead ends: 184 [2020-08-18 15:36:34,873 INFO L226 Difference]: Without dead ends: 182 [2020-08-18 15:36:34,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-08-18 15:36:34,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-18 15:36:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 167. [2020-08-18 15:36:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-18 15:36:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 188 transitions. [2020-08-18 15:36:34,905 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 188 transitions. Word has length 161 [2020-08-18 15:36:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:34,906 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 188 transitions. [2020-08-18 15:36:34,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 15:36:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 188 transitions. [2020-08-18 15:36:34,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-18 15:36:34,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:34,910 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:34,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 15:36:34,910 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:34,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:34,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1425986384, now seen corresponding path program 13 times [2020-08-18 15:36:34,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:34,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562140005] [2020-08-18 15:36:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 89 proven. 521 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2020-08-18 15:36:35,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562140005] [2020-08-18 15:36:35,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:35,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 15:36:35,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62255083] [2020-08-18 15:36:35,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 15:36:35,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:35,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 15:36:35,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-08-18 15:36:35,275 INFO L87 Difference]: Start difference. First operand 167 states and 188 transitions. Second operand 16 states. [2020-08-18 15:36:36,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:36,243 INFO L93 Difference]: Finished difference Result 295 states and 344 transitions. [2020-08-18 15:36:36,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-18 15:36:36,244 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 168 [2020-08-18 15:36:36,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:36,248 INFO L225 Difference]: With dead ends: 295 [2020-08-18 15:36:36,248 INFO L226 Difference]: Without dead ends: 218 [2020-08-18 15:36:36,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=642, Invalid=1614, Unknown=0, NotChecked=0, Total=2256 [2020-08-18 15:36:36,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-08-18 15:36:36,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 187. [2020-08-18 15:36:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-08-18 15:36:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 216 transitions. [2020-08-18 15:36:36,280 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 216 transitions. Word has length 168 [2020-08-18 15:36:36,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:36,287 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 216 transitions. [2020-08-18 15:36:36,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 15:36:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 216 transitions. [2020-08-18 15:36:36,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-08-18 15:36:36,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:36,290 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 8, 7, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:36,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 15:36:36,290 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:36,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1410050128, now seen corresponding path program 14 times [2020-08-18 15:36:36,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:36,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760712849] [2020-08-18 15:36:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 15:36:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-18 15:36:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-18 15:36:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2506 backedges. 707 proven. 405 refuted. 0 times theorem prover too weak. 1394 trivial. 0 not checked. [2020-08-18 15:36:36,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760712849] [2020-08-18 15:36:36,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:36,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 15:36:36,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140742197] [2020-08-18 15:36:36,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 15:36:36,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:36,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 15:36:36,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:36:36,644 INFO L87 Difference]: Start difference. First operand 187 states and 216 transitions. Second operand 15 states. [2020-08-18 15:36:37,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:37,326 INFO L93 Difference]: Finished difference Result 304 states and 358 transitions. [2020-08-18 15:36:37,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 15:36:37,332 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2020-08-18 15:36:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:37,337 INFO L225 Difference]: With dead ends: 304 [2020-08-18 15:36:37,337 INFO L226 Difference]: Without dead ends: 209 [2020-08-18 15:36:37,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=425, Invalid=835, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 15:36:37,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-08-18 15:36:37,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 202. [2020-08-18 15:36:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-18 15:36:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2020-08-18 15:36:37,371 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 226 [2020-08-18 15:36:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:37,373 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2020-08-18 15:36:37,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 15:36:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2020-08-18 15:36:37,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-08-18 15:36:37,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:37,378 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 8, 7, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:37,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 15:36:37,379 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:37,379 INFO L82 PathProgramCache]: Analyzing trace with hash 400238009, now seen corresponding path program 15 times [2020-08-18 15:36:37,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:37,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802214893] [2020-08-18 15:36:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-18 15:36:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2692 backedges. 833 proven. 226 refuted. 0 times theorem prover too weak. 1633 trivial. 0 not checked. [2020-08-18 15:36:37,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802214893] [2020-08-18 15:36:37,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:37,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 15:36:37,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969626802] [2020-08-18 15:36:37,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:36:37,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:37,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:36:37,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:36:37,685 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand 13 states. [2020-08-18 15:36:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:38,127 INFO L93 Difference]: Finished difference Result 356 states and 421 transitions. [2020-08-18 15:36:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 15:36:38,127 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 233 [2020-08-18 15:36:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:38,129 INFO L225 Difference]: With dead ends: 356 [2020-08-18 15:36:38,130 INFO L226 Difference]: Without dead ends: 203 [2020-08-18 15:36:38,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=509, Unknown=0, NotChecked=0, Total=756 [2020-08-18 15:36:38,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-08-18 15:36:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2020-08-18 15:36:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-18 15:36:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2020-08-18 15:36:38,160 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 233 [2020-08-18 15:36:38,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:38,161 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2020-08-18 15:36:38,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 15:36:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2020-08-18 15:36:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-18 15:36:38,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:38,165 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 8, 7, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:38,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 15:36:38,165 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:38,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:38,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1039853412, now seen corresponding path program 16 times [2020-08-18 15:36:38,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:38,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340934405] [2020-08-18 15:36:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2885 backedges. 116 proven. 1050 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2020-08-18 15:36:38,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340934405] [2020-08-18 15:36:38,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:38,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 15:36:38,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752769954] [2020-08-18 15:36:38,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 15:36:38,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:38,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 15:36:38,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-08-18 15:36:38,476 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 16 states. [2020-08-18 15:36:39,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:39,608 INFO L93 Difference]: Finished difference Result 398 states and 480 transitions. [2020-08-18 15:36:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 15:36:39,609 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 240 [2020-08-18 15:36:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:39,611 INFO L225 Difference]: With dead ends: 398 [2020-08-18 15:36:39,612 INFO L226 Difference]: Without dead ends: 306 [2020-08-18 15:36:39,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=2403, Unknown=0, NotChecked=0, Total=3306 [2020-08-18 15:36:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-18 15:36:39,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 267. [2020-08-18 15:36:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-18 15:36:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 318 transitions. [2020-08-18 15:36:39,661 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 318 transitions. Word has length 240 [2020-08-18 15:36:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:39,662 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 318 transitions. [2020-08-18 15:36:39,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 15:36:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 318 transitions. [2020-08-18 15:36:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-18 15:36:39,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:39,668 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 9, 8, 8, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:39,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 15:36:39,669 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:39,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:39,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1581346975, now seen corresponding path program 17 times [2020-08-18 15:36:39,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:39,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105535798] [2020-08-18 15:36:39,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 15:36:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 937 proven. 633 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2020-08-18 15:36:40,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105535798] [2020-08-18 15:36:40,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:40,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 15:36:40,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79396383] [2020-08-18 15:36:40,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 15:36:40,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:40,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 15:36:40,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:36:40,025 INFO L87 Difference]: Start difference. First operand 267 states and 318 transitions. Second operand 15 states. [2020-08-18 15:36:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:40,744 INFO L93 Difference]: Finished difference Result 461 states and 558 transitions. [2020-08-18 15:36:40,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 15:36:40,745 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 271 [2020-08-18 15:36:40,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:40,747 INFO L225 Difference]: With dead ends: 461 [2020-08-18 15:36:40,747 INFO L226 Difference]: Without dead ends: 286 [2020-08-18 15:36:40,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=794, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 15:36:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-18 15:36:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 239. [2020-08-18 15:36:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 15:36:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 278 transitions. [2020-08-18 15:36:40,780 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 278 transitions. Word has length 271 [2020-08-18 15:36:40,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:40,781 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 278 transitions. [2020-08-18 15:36:40,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 15:36:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 278 transitions. [2020-08-18 15:36:40,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-08-18 15:36:40,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:40,785 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 9, 8, 8, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:40,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 15:36:40,786 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:40,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:40,786 INFO L82 PathProgramCache]: Analyzing trace with hash -2078560834, now seen corresponding path program 18 times [2020-08-18 15:36:40,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:40,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050495534] [2020-08-18 15:36:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:40,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:40,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:40,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4014 backedges. 429 proven. 1177 refuted. 0 times theorem prover too weak. 2408 trivial. 0 not checked. [2020-08-18 15:36:41,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050495534] [2020-08-18 15:36:41,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:41,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 15:36:41,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814998792] [2020-08-18 15:36:41,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 15:36:41,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:41,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 15:36:41,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:36:41,121 INFO L87 Difference]: Start difference. First operand 239 states and 278 transitions. Second operand 17 states. [2020-08-18 15:36:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:41,819 INFO L93 Difference]: Finished difference Result 312 states and 355 transitions. [2020-08-18 15:36:41,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 15:36:41,822 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 278 [2020-08-18 15:36:41,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:41,824 INFO L225 Difference]: With dead ends: 312 [2020-08-18 15:36:41,824 INFO L226 Difference]: Without dead ends: 310 [2020-08-18 15:36:41,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2020-08-18 15:36:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-18 15:36:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 295. [2020-08-18 15:36:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-18 15:36:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 336 transitions. [2020-08-18 15:36:41,859 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 336 transitions. Word has length 278 [2020-08-18 15:36:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:41,860 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 336 transitions. [2020-08-18 15:36:41,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 15:36:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 336 transitions. [2020-08-18 15:36:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-08-18 15:36:41,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:41,864 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 9, 8, 8, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:41,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 15:36:41,865 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:41,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:41,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1263938933, now seen corresponding path program 19 times [2020-08-18 15:36:41,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:41,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411368022] [2020-08-18 15:36:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 150 proven. 1638 refuted. 0 times theorem prover too weak. 2462 trivial. 0 not checked. [2020-08-18 15:36:42,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411368022] [2020-08-18 15:36:42,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:42,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 15:36:42,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579157396] [2020-08-18 15:36:42,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 15:36:42,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:42,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 15:36:42,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:36:42,244 INFO L87 Difference]: Start difference. First operand 295 states and 336 transitions. Second operand 18 states. [2020-08-18 15:36:43,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:43,637 INFO L93 Difference]: Finished difference Result 501 states and 595 transitions. [2020-08-18 15:36:43,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-18 15:36:43,642 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 285 [2020-08-18 15:36:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:43,649 INFO L225 Difference]: With dead ends: 501 [2020-08-18 15:36:43,649 INFO L226 Difference]: Without dead ends: 410 [2020-08-18 15:36:43,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1240, Invalid=3182, Unknown=0, NotChecked=0, Total=4422 [2020-08-18 15:36:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-08-18 15:36:43,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 316. [2020-08-18 15:36:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-18 15:36:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 365 transitions. [2020-08-18 15:36:43,706 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 365 transitions. Word has length 285 [2020-08-18 15:36:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:43,707 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 365 transitions. [2020-08-18 15:36:43,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 15:36:43,707 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 365 transitions. [2020-08-18 15:36:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-08-18 15:36:43,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:43,710 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 10, 9, 9, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:43,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 15:36:43,711 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:43,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:43,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1910860175, now seen corresponding path program 20 times [2020-08-18 15:36:43,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:43,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927720477] [2020-08-18 15:36:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-18 15:36:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:36:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:36:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:36:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:36:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:36:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5603 backedges. 1239 proven. 1145 refuted. 0 times theorem prover too weak. 3219 trivial. 0 not checked. [2020-08-18 15:36:44,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927720477] [2020-08-18 15:36:44,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:44,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 15:36:44,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577940579] [2020-08-18 15:36:44,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 15:36:44,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:44,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 15:36:44,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:36:44,102 INFO L87 Difference]: Start difference. First operand 316 states and 365 transitions. Second operand 17 states. [2020-08-18 15:36:44,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:44,984 INFO L93 Difference]: Finished difference Result 538 states and 640 transitions. [2020-08-18 15:36:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 15:36:44,984 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 323 [2020-08-18 15:36:44,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:44,988 INFO L225 Difference]: With dead ends: 538 [2020-08-18 15:36:44,988 INFO L226 Difference]: Without dead ends: 340 [2020-08-18 15:36:44,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=633, Invalid=1259, Unknown=0, NotChecked=0, Total=1892 [2020-08-18 15:36:44,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-18 15:36:45,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 334. [2020-08-18 15:36:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-18 15:36:45,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 387 transitions. [2020-08-18 15:36:45,041 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 387 transitions. Word has length 323 [2020-08-18 15:36:45,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:45,041 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 387 transitions. [2020-08-18 15:36:45,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 15:36:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 387 transitions. [2020-08-18 15:36:45,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-18 15:36:45,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:45,044 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 10, 9, 9, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:45,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 15:36:45,047 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:45,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:45,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1089690308, now seen corresponding path program 21 times [2020-08-18 15:36:45,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:45,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958944972] [2020-08-18 15:36:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:36:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:36:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:36:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:36:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:36:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:36:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5882 backedges. 443 proven. 2023 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2020-08-18 15:36:45,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958944972] [2020-08-18 15:36:45,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:45,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 15:36:45,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84837537] [2020-08-18 15:36:45,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 15:36:45,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:45,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 15:36:45,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:36:45,449 INFO L87 Difference]: Start difference. First operand 334 states and 387 transitions. Second operand 15 states. [2020-08-18 15:36:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:46,320 INFO L93 Difference]: Finished difference Result 490 states and 557 transitions. [2020-08-18 15:36:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 15:36:46,320 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 330 [2020-08-18 15:36:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:46,323 INFO L225 Difference]: With dead ends: 490 [2020-08-18 15:36:46,323 INFO L226 Difference]: Without dead ends: 488 [2020-08-18 15:36:46,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=1308, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 15:36:46,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-18 15:36:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 443. [2020-08-18 15:36:46,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-18 15:36:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 510 transitions. [2020-08-18 15:36:46,387 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 510 transitions. Word has length 330 [2020-08-18 15:36:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:46,388 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 510 transitions. [2020-08-18 15:36:46,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 15:36:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 510 transitions. [2020-08-18 15:36:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-08-18 15:36:46,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:46,393 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:46,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-18 15:36:46,394 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:46,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:46,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1713724203, now seen corresponding path program 22 times [2020-08-18 15:36:46,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:46,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140308742] [2020-08-18 15:36:46,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:36:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:36:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:36:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:36:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:36:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:36:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-18 15:36:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-18 15:36:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-18 15:36:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-18 15:36:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-18 15:36:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-18 15:36:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7781 backedges. 455 proven. 2337 refuted. 0 times theorem prover too weak. 4989 trivial. 0 not checked. [2020-08-18 15:36:46,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140308742] [2020-08-18 15:36:46,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:46,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 15:36:46,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084285360] [2020-08-18 15:36:46,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 15:36:46,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:46,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 15:36:46,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:36:46,910 INFO L87 Difference]: Start difference. First operand 443 states and 510 transitions. Second operand 18 states. [2020-08-18 15:36:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:47,548 INFO L93 Difference]: Finished difference Result 503 states and 584 transitions. [2020-08-18 15:36:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 15:36:47,548 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 375 [2020-08-18 15:36:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:47,551 INFO L225 Difference]: With dead ends: 503 [2020-08-18 15:36:47,551 INFO L226 Difference]: Without dead ends: 501 [2020-08-18 15:36:47,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 15:36:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-08-18 15:36:47,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 457. [2020-08-18 15:36:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-18 15:36:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 526 transitions. [2020-08-18 15:36:47,609 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 526 transitions. Word has length 375 [2020-08-18 15:36:47,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:47,610 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 526 transitions. [2020-08-18 15:36:47,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 15:36:47,610 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 526 transitions. [2020-08-18 15:36:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-08-18 15:36:47,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:47,614 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:47,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-18 15:36:47,614 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:47,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:47,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1934385026, now seen corresponding path program 23 times [2020-08-18 15:36:47,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:47,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266578321] [2020-08-18 15:36:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:36:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:36:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:36:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:36:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:36:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:36:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-18 15:36:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-18 15:36:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-18 15:36:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-18 15:36:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-18 15:36:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-18 15:36:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-08-18 15:36:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8110 backedges. 1646 proven. 1795 refuted. 0 times theorem prover too weak. 4669 trivial. 0 not checked. [2020-08-18 15:36:47,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266578321] [2020-08-18 15:36:47,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:47,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 15:36:47,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851104924] [2020-08-18 15:36:47,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:36:47,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:48,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:36:48,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:36:48,000 INFO L87 Difference]: Start difference. First operand 457 states and 526 transitions. Second operand 13 states. [2020-08-18 15:36:48,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:48,645 INFO L93 Difference]: Finished difference Result 947 states and 1112 transitions. [2020-08-18 15:36:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 15:36:48,647 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 382 [2020-08-18 15:36:48,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:48,650 INFO L225 Difference]: With dead ends: 947 [2020-08-18 15:36:48,651 INFO L226 Difference]: Without dead ends: 506 [2020-08-18 15:36:48,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=345, Invalid=711, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 15:36:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-18 15:36:48,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 503. [2020-08-18 15:36:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-18 15:36:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 595 transitions. [2020-08-18 15:36:48,722 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 595 transitions. Word has length 382 [2020-08-18 15:36:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:48,723 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 595 transitions. [2020-08-18 15:36:48,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 15:36:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 595 transitions. [2020-08-18 15:36:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-08-18 15:36:48,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:48,727 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 13, 12, 12, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:48,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-18 15:36:48,728 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:48,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:48,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1577141198, now seen corresponding path program 24 times [2020-08-18 15:36:48,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:48,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981433163] [2020-08-18 15:36:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-18 15:36:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-18 15:36:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-18 15:36:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-18 15:36:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-18 15:36:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-08-18 15:36:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-18 15:36:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 15:36:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-18 15:36:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-18 15:36:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-18 15:36:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-18 15:36:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-18 15:36:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:36:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:36:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-18 15:36:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-18 15:36:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-18 15:36:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:36:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:36:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:36:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-18 15:36:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-18 15:36:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-18 15:36:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:36:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:36:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:36:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:48,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:36:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 11597 backedges. 3275 proven. 704 refuted. 0 times theorem prover too weak. 7618 trivial. 0 not checked. [2020-08-18 15:36:49,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981433163] [2020-08-18 15:36:49,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:49,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 15:36:49,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938749121] [2020-08-18 15:36:49,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:36:49,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:49,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:36:49,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:36:49,226 INFO L87 Difference]: Start difference. First operand 503 states and 595 transitions. Second operand 11 states. [2020-08-18 15:36:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:49,609 INFO L93 Difference]: Finished difference Result 702 states and 825 transitions. [2020-08-18 15:36:49,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 15:36:49,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 454 [2020-08-18 15:36:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:49,612 INFO L225 Difference]: With dead ends: 702 [2020-08-18 15:36:49,612 INFO L226 Difference]: Without dead ends: 412 [2020-08-18 15:36:49,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2020-08-18 15:36:49,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-18 15:36:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-18 15:36:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-18 15:36:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 473 transitions. [2020-08-18 15:36:49,664 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 473 transitions. Word has length 454 [2020-08-18 15:36:49,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:49,665 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 473 transitions. [2020-08-18 15:36:49,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:36:49,665 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 473 transitions. [2020-08-18 15:36:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-08-18 15:36:49,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:49,669 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 14, 13, 13, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:49,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-18 15:36:49,669 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:49,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:49,670 INFO L82 PathProgramCache]: Analyzing trace with hash 389126169, now seen corresponding path program 25 times [2020-08-18 15:36:49,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:49,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850002507] [2020-08-18 15:36:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-18 15:36:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 15:36:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-18 15:36:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-18 15:36:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-18 15:36:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-18 15:36:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-18 15:36:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:36:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:36:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-18 15:36:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-18 15:36:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-18 15:36:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:36:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:36:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:36:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-18 15:36:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-18 15:36:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-18 15:36:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:36:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:36:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:36:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-18 15:36:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-18 15:36:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-18 15:36:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-18 15:36:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:36:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:36:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:49,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:36:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 14212 backedges. 3869 proven. 1294 refuted. 0 times theorem prover too weak. 9049 trivial. 0 not checked. [2020-08-18 15:36:50,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850002507] [2020-08-18 15:36:50,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:50,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:36:50,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408494147] [2020-08-18 15:36:50,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:36:50,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:50,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:36:50,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:36:50,170 INFO L87 Difference]: Start difference. First operand 412 states and 473 transitions. Second operand 12 states. [2020-08-18 15:36:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:50,650 INFO L93 Difference]: Finished difference Result 611 states and 701 transitions. [2020-08-18 15:36:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 15:36:50,650 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 499 [2020-08-18 15:36:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:50,653 INFO L225 Difference]: With dead ends: 611 [2020-08-18 15:36:50,653 INFO L226 Difference]: Without dead ends: 412 [2020-08-18 15:36:50,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=455, Unknown=0, NotChecked=0, Total=702 [2020-08-18 15:36:50,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-18 15:36:50,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-18 15:36:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-18 15:36:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 471 transitions. [2020-08-18 15:36:50,708 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 471 transitions. Word has length 499 [2020-08-18 15:36:50,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:50,709 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 471 transitions. [2020-08-18 15:36:50,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:36:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 471 transitions. [2020-08-18 15:36:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-08-18 15:36:50,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:50,713 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:50,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-18 15:36:50,714 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:50,714 INFO L82 PathProgramCache]: Analyzing trace with hash 206006162, now seen corresponding path program 26 times [2020-08-18 15:36:50,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:50,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143505319] [2020-08-18 15:36:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:36:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:36:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:36:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:36:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:36:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:36:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-18 15:36:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:36:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:36:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:36:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-18 15:36:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-18 15:36:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:36:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:36:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:36:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-18 15:36:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-18 15:36:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-18 15:36:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:36:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:36:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:36:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-18 15:36:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-18 15:36:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-18 15:36:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-18 15:36:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:36:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:36:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-08-18 15:36:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-08-18 15:36:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-18 15:36:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-18 15:36:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-18 15:36:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 15:36:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:36:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 17094 backedges. 4741 proven. 1771 refuted. 0 times theorem prover too weak. 10582 trivial. 0 not checked. [2020-08-18 15:36:51,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143505319] [2020-08-18 15:36:51,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:51,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 15:36:51,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763118691] [2020-08-18 15:36:51,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 15:36:51,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:51,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 15:36:51,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:36:51,348 INFO L87 Difference]: Start difference. First operand 412 states and 471 transitions. Second operand 19 states. [2020-08-18 15:36:52,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:52,619 INFO L93 Difference]: Finished difference Result 617 states and 706 transitions. [2020-08-18 15:36:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-18 15:36:52,619 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 544 [2020-08-18 15:36:52,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:52,622 INFO L225 Difference]: With dead ends: 617 [2020-08-18 15:36:52,622 INFO L226 Difference]: Without dead ends: 416 [2020-08-18 15:36:52,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=965, Invalid=1897, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 15:36:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-08-18 15:36:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2020-08-18 15:36:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-18 15:36:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 474 transitions. [2020-08-18 15:36:52,677 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 474 transitions. Word has length 544 [2020-08-18 15:36:52,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:52,678 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 474 transitions. [2020-08-18 15:36:52,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 15:36:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 474 transitions. [2020-08-18 15:36:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-08-18 15:36:52,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:52,683 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 69, 69, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:52,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-18 15:36:52,683 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:52,684 INFO L82 PathProgramCache]: Analyzing trace with hash 22704138, now seen corresponding path program 27 times [2020-08-18 15:36:52,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:52,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188699959] [2020-08-18 15:36:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:36:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:36:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:36:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:36:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:36:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:36:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:36:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:36:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:36:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:36:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:36:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-18 15:36:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:36:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:36:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:36:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:36:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-18 15:36:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-18 15:36:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:36:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:36:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:36:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:36:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-18 15:36:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-18 15:36:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-18 15:36:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:36:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:36:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:36:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:36:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-18 15:36:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-18 15:36:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-18 15:36:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 15:36:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:36:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:36:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:36:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18075 backedges. 5945 proven. 607 refuted. 0 times theorem prover too weak. 11523 trivial. 0 not checked. [2020-08-18 15:36:53,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188699959] [2020-08-18 15:36:53,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:53,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 15:36:53,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870773436] [2020-08-18 15:36:53,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 15:36:53,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:53,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 15:36:53,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:36:53,238 INFO L87 Difference]: Start difference. First operand 416 states and 474 transitions. Second operand 15 states. [2020-08-18 15:36:53,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:53,943 INFO L93 Difference]: Finished difference Result 618 states and 703 transitions. [2020-08-18 15:36:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 15:36:53,944 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 558 [2020-08-18 15:36:53,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:53,946 INFO L225 Difference]: With dead ends: 618 [2020-08-18 15:36:53,947 INFO L226 Difference]: Without dead ends: 417 [2020-08-18 15:36:53,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=341, Invalid=715, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 15:36:53,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-18 15:36:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-18 15:36:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-18 15:36:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 473 transitions. [2020-08-18 15:36:53,999 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 473 transitions. Word has length 558 [2020-08-18 15:36:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:54,000 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 473 transitions. [2020-08-18 15:36:54,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 15:36:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 473 transitions. [2020-08-18 15:36:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-08-18 15:36:54,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:54,005 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 70, 70, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:54,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-18 15:36:54,005 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:54,006 INFO L82 PathProgramCache]: Analyzing trace with hash -289471297, now seen corresponding path program 28 times [2020-08-18 15:36:54,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:54,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354895509] [2020-08-18 15:36:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:36:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:36:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:36:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:36:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:36:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:36:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:36:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:36:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:36:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:36:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:36:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:36:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:36:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:36:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:36:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:36:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:36:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-18 15:36:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:36:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:36:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:36:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:36:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:36:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-18 15:36:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-18 15:36:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:36:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:36:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:36:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:36:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:36:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-18 15:36:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-18 15:36:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 15:36:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:36:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:36:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:36:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:36:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18576 backedges. 5565 proven. 1561 refuted. 0 times theorem prover too weak. 11450 trivial. 0 not checked. [2020-08-18 15:36:54,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354895509] [2020-08-18 15:36:54,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:54,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 15:36:54,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295137490] [2020-08-18 15:36:54,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 15:36:54,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:54,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 15:36:54,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:36:54,529 INFO L87 Difference]: Start difference. First operand 416 states and 473 transitions. Second operand 17 states. [2020-08-18 15:36:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:55,376 INFO L93 Difference]: Finished difference Result 618 states and 701 transitions. [2020-08-18 15:36:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 15:36:55,376 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 565 [2020-08-18 15:36:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:55,380 INFO L225 Difference]: With dead ends: 618 [2020-08-18 15:36:55,380 INFO L226 Difference]: Without dead ends: 417 [2020-08-18 15:36:55,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=568, Invalid=1154, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 15:36:55,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-18 15:36:55,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-18 15:36:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-18 15:36:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 472 transitions. [2020-08-18 15:36:55,432 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 472 transitions. Word has length 565 [2020-08-18 15:36:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:55,433 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 472 transitions. [2020-08-18 15:36:55,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 15:36:55,433 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 472 transitions. [2020-08-18 15:36:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-18 15:36:55,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:55,438 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 71, 71, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:55,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-18 15:36:55,438 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:55,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:55,439 INFO L82 PathProgramCache]: Analyzing trace with hash 126799646, now seen corresponding path program 29 times [2020-08-18 15:36:55,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:55,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953899611] [2020-08-18 15:36:55,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:36:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:36:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:36:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:36:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:36:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:36:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:36:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:36:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:36:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:36:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:36:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:36:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:36:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:36:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:36:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:36:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:36:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 15:36:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:36:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:36:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:36:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:36:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:36:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 15:36:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-18 15:36:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:36:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:36:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:36:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:36:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:36:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 15:36:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-18 15:36:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 15:36:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:36:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:36:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:36:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:36:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:55,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 15:36:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 19084 backedges. 4945 proven. 2699 refuted. 0 times theorem prover too weak. 11440 trivial. 0 not checked. [2020-08-18 15:36:56,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953899611] [2020-08-18 15:36:56,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:56,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 15:36:56,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868172001] [2020-08-18 15:36:56,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 15:36:56,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:56,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 15:36:56,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:36:56,042 INFO L87 Difference]: Start difference. First operand 416 states and 472 transitions. Second operand 19 states. [2020-08-18 15:36:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:57,228 INFO L93 Difference]: Finished difference Result 620 states and 702 transitions. [2020-08-18 15:36:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-18 15:36:57,229 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 572 [2020-08-18 15:36:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:57,232 INFO L225 Difference]: With dead ends: 620 [2020-08-18 15:36:57,232 INFO L226 Difference]: Without dead ends: 419 [2020-08-18 15:36:57,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=886, Invalid=1766, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 15:36:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-08-18 15:36:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 418. [2020-08-18 15:36:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-18 15:36:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 474 transitions. [2020-08-18 15:36:57,286 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 474 transitions. Word has length 572 [2020-08-18 15:36:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:57,286 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 474 transitions. [2020-08-18 15:36:57,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 15:36:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 474 transitions. [2020-08-18 15:36:57,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-08-18 15:36:57,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:57,291 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 72, 72, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:57,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-18 15:36:57,292 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:57,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:57,292 INFO L82 PathProgramCache]: Analyzing trace with hash -847775853, now seen corresponding path program 30 times [2020-08-18 15:36:57,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:57,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864237941] [2020-08-18 15:36:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:36:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:36:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:36:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:36:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:36:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:36:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:36:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:36:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:36:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:36:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:36:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:36:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:36:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:36:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:36:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:36:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:36:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 15:36:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:36:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:36:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:36:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:36:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:36:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 15:36:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 15:36:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:36:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:36:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:36:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:36:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:36:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 15:36:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 15:36:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 15:36:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:36:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:36:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:36:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:36:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 15:36:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:57,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 15:36:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 19599 backedges. 2008 proven. 5249 refuted. 0 times theorem prover too weak. 12342 trivial. 0 not checked. [2020-08-18 15:36:58,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864237941] [2020-08-18 15:36:58,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:58,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-18 15:36:58,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044719686] [2020-08-18 15:36:58,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-18 15:36:58,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:58,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-18 15:36:58,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-08-18 15:36:58,018 INFO L87 Difference]: Start difference. First operand 418 states and 474 transitions. Second operand 20 states. [2020-08-18 15:36:58,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:36:58,792 INFO L93 Difference]: Finished difference Result 504 states and 565 transitions. [2020-08-18 15:36:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 15:36:58,799 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 579 [2020-08-18 15:36:58,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:36:58,803 INFO L225 Difference]: With dead ends: 504 [2020-08-18 15:36:58,803 INFO L226 Difference]: Without dead ends: 502 [2020-08-18 15:36:58,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2020-08-18 15:36:58,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-18 15:36:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 478. [2020-08-18 15:36:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-18 15:36:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 538 transitions. [2020-08-18 15:36:58,863 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 538 transitions. Word has length 579 [2020-08-18 15:36:58,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:36:58,864 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 538 transitions. [2020-08-18 15:36:58,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-18 15:36:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 538 transitions. [2020-08-18 15:36:58,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-08-18 15:36:58,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:36:58,869 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 73, 73, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:36:58,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-18 15:36:58,870 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:36:58,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:36:58,870 INFO L82 PathProgramCache]: Analyzing trace with hash 267632406, now seen corresponding path program 31 times [2020-08-18 15:36:58,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:36:58,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053322977] [2020-08-18 15:36:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:36:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:36:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:36:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:36:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:36:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:36:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:36:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:36:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:36:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:36:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:36:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:36:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:36:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:36:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:36:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:36:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:36:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:36:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:36:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:36:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:36:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:36:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:36:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:36:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:36:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:36:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:36:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:36:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:36:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:36:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:36:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:36:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:36:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:36:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:36:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:36:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:36:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:36:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:36:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:36:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:36:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:36:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:36:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:36:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:36:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:36:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:36:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:36:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:36:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:36:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:36:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:36:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 15:36:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:36:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:36:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:36:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:36:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:36:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 15:36:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 15:36:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:36:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:36:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:36:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:36:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:36:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 15:36:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 15:36:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 15:36:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:36:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:36:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:36:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:36:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 15:36:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 15:36:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 15:36:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:36:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 20121 backedges. 4227 proven. 4030 refuted. 0 times theorem prover too weak. 11864 trivial. 0 not checked. [2020-08-18 15:36:59,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053322977] [2020-08-18 15:36:59,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:36:59,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-18 15:36:59,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198410500] [2020-08-18 15:36:59,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-18 15:36:59,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:36:59,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-18 15:36:59,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-08-18 15:36:59,601 INFO L87 Difference]: Start difference. First operand 478 states and 538 transitions. Second operand 21 states. [2020-08-18 15:37:01,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:37:01,278 INFO L93 Difference]: Finished difference Result 714 states and 810 transitions. [2020-08-18 15:37:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 15:37:01,279 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 586 [2020-08-18 15:37:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:37:01,282 INFO L225 Difference]: With dead ends: 714 [2020-08-18 15:37:01,282 INFO L226 Difference]: Without dead ends: 479 [2020-08-18 15:37:01,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1311, Invalid=2595, Unknown=0, NotChecked=0, Total=3906 [2020-08-18 15:37:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-08-18 15:37:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 478. [2020-08-18 15:37:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-18 15:37:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 536 transitions. [2020-08-18 15:37:01,339 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 536 transitions. Word has length 586 [2020-08-18 15:37:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:37:01,339 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 536 transitions. [2020-08-18 15:37:01,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-18 15:37:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 536 transitions. [2020-08-18 15:37:01,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2020-08-18 15:37:01,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:37:01,344 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 74, 74, 74, 74, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:37:01,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-18 15:37:01,344 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:37:01,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:37:01,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1197037185, now seen corresponding path program 32 times [2020-08-18 15:37:01,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:37:01,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513441193] [2020-08-18 15:37:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:37:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:37:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:37:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:37:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:37:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:37:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:37:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:37:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:37:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:37:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:37:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:37:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:37:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:37:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:37:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:37:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:37:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:37:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:37:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:37:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:37:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:37:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:37:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:37:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:37:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:37:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:37:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:37:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:37:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:37:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:37:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:37:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:37:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:37:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:37:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:37:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:37:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:37:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:37:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:37:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:37:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:37:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:37:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:37:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:37:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:37:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:37:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:37:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:37:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:37:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:37:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:37:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 15:37:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:37:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:37:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:37:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:37:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:37:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 15:37:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 15:37:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:37:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:37:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:37:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:37:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:37:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 15:37:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 15:37:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 15:37:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:37:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:37:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:37:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:37:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 15:37:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 15:37:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 15:37:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:01,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 15:37:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 20650 backedges. 2012 proven. 5637 refuted. 0 times theorem prover too weak. 13001 trivial. 0 not checked. [2020-08-18 15:37:02,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513441193] [2020-08-18 15:37:02,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:37:02,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-18 15:37:02,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128045653] [2020-08-18 15:37:02,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-18 15:37:02,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:37:02,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-18 15:37:02,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-08-18 15:37:02,190 INFO L87 Difference]: Start difference. First operand 478 states and 536 transitions. Second operand 21 states. [2020-08-18 15:37:03,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:37:03,019 INFO L93 Difference]: Finished difference Result 537 states and 603 transitions. [2020-08-18 15:37:03,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 15:37:03,020 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 593 [2020-08-18 15:37:03,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:37:03,024 INFO L225 Difference]: With dead ends: 537 [2020-08-18 15:37:03,024 INFO L226 Difference]: Without dead ends: 535 [2020-08-18 15:37:03,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=409, Invalid=1151, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 15:37:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-08-18 15:37:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 505. [2020-08-18 15:37:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-08-18 15:37:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 570 transitions. [2020-08-18 15:37:03,085 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 570 transitions. Word has length 593 [2020-08-18 15:37:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:37:03,085 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 570 transitions. [2020-08-18 15:37:03,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-18 15:37:03,086 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 570 transitions. [2020-08-18 15:37:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-08-18 15:37:03,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:37:03,091 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 76, 75, 75, 75, 75, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:37:03,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-18 15:37:03,092 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:37:03,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:37:03,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1218530218, now seen corresponding path program 33 times [2020-08-18 15:37:03,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:37:03,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614767863] [2020-08-18 15:37:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:37:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:37:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:37:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:37:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:37:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:37:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:37:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:37:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:37:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:37:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:37:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:37:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:37:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:37:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:37:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:37:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:37:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:37:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:37:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:37:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:37:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:37:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:37:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:37:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:37:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:37:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:37:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:37:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:37:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:37:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:37:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:37:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:37:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:37:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:37:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:37:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:37:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:37:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:37:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:37:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:37:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:37:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:37:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:37:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:37:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:37:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:37:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:37:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:37:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:37:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:37:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:37:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 15:37:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:37:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:37:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:37:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:37:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:37:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 15:37:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 15:37:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:37:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:37:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:37:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:37:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:37:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 15:37:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 15:37:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 15:37:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:37:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:37:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:37:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:37:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 15:37:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 15:37:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 15:37:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 15:37:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-18 15:37:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21186 backedges. 342 proven. 8400 refuted. 0 times theorem prover too weak. 12444 trivial. 0 not checked. [2020-08-18 15:37:03,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614767863] [2020-08-18 15:37:03,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:37:03,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-18 15:37:03,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189967212] [2020-08-18 15:37:03,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-18 15:37:03,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:37:03,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-18 15:37:03,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-08-18 15:37:03,845 INFO L87 Difference]: Start difference. First operand 505 states and 570 transitions. Second operand 24 states. [2020-08-18 15:37:06,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:37:06,912 INFO L93 Difference]: Finished difference Result 898 states and 1049 transitions. [2020-08-18 15:37:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-08-18 15:37:06,913 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 600 [2020-08-18 15:37:06,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:37:06,917 INFO L225 Difference]: With dead ends: 898 [2020-08-18 15:37:06,917 INFO L226 Difference]: Without dead ends: 631 [2020-08-18 15:37:06,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5052 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3553, Invalid=8879, Unknown=0, NotChecked=0, Total=12432 [2020-08-18 15:37:06,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-18 15:37:07,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-18 15:37:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-18 15:37:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 730 transitions. [2020-08-18 15:37:07,004 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 730 transitions. Word has length 600 [2020-08-18 15:37:07,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:37:07,005 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 730 transitions. [2020-08-18 15:37:07,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-18 15:37:07,005 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 730 transitions. [2020-08-18 15:37:07,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-08-18 15:37:07,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:37:07,015 INFO L422 BasicCegarLoop]: trace histogram [110, 110, 110, 109, 109, 109, 109, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:37:07,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-18 15:37:07,015 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:37:07,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:37:07,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1731219376, now seen corresponding path program 34 times [2020-08-18 15:37:07,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:37:07,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172191428] [2020-08-18 15:37:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:37:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:37:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:37:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:37:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:37:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:37:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:37:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:37:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:37:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:37:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:37:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:37:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:37:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:37:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:37:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:37:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:37:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:37:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:37:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:37:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:37:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:37:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:37:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:37:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:37:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:37:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:37:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:37:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:37:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:37:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:37:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:37:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:37:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:37:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:37:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:37:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:37:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:37:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:37:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:37:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:37:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:37:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:37:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:37:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:37:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:37:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:37:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:37:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:37:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:37:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:37:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:37:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 15:37:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:37:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:37:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:37:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:37:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:37:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 15:37:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 15:37:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:37:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:37:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:37:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:37:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:37:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 15:37:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 15:37:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 15:37:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:37:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:37:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:37:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:37:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 15:37:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 15:37:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 15:37:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 15:37:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-08-18 15:37:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-18 15:37:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-18 15:37:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-18 15:37:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-18 15:37:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-08-18 15:37:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-18 15:37:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-18 15:37:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-18 15:37:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-18 15:37:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-18 15:37:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-08-18 15:37:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-18 15:37:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-18 15:37:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-18 15:37:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-18 15:37:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-18 15:37:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-18 15:37:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-08-18 15:37:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-18 15:37:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-18 15:37:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-18 15:37:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-18 15:37:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-18 15:37:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-18 15:37:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-18 15:37:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-08-18 15:37:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-18 15:37:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-18 15:37:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-18 15:37:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-18 15:37:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-18 15:37:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-18 15:37:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-18 15:37:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-18 15:37:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 44431 backedges. 11950 proven. 5563 refuted. 0 times theorem prover too weak. 26918 trivial. 0 not checked. [2020-08-18 15:37:08,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172191428] [2020-08-18 15:37:08,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:37:08,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-18 15:37:08,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592642845] [2020-08-18 15:37:08,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-18 15:37:08,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:37:08,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-18 15:37:08,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-08-18 15:37:08,045 INFO L87 Difference]: Start difference. First operand 628 states and 730 transitions. Second operand 23 states. [2020-08-18 15:37:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:37:10,238 INFO L93 Difference]: Finished difference Result 923 states and 1077 transitions. [2020-08-18 15:37:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-18 15:37:10,238 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 856 [2020-08-18 15:37:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:37:10,243 INFO L225 Difference]: With dead ends: 923 [2020-08-18 15:37:10,243 INFO L226 Difference]: Without dead ends: 631 [2020-08-18 15:37:10,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1873, Invalid=3677, Unknown=0, NotChecked=0, Total=5550 [2020-08-18 15:37:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-18 15:37:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-18 15:37:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-18 15:37:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 728 transitions. [2020-08-18 15:37:10,332 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 728 transitions. Word has length 856 [2020-08-18 15:37:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:37:10,332 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 728 transitions. [2020-08-18 15:37:10,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-18 15:37:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 728 transitions. [2020-08-18 15:37:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-08-18 15:37:10,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:37:10,341 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 111, 110, 110, 110, 110, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:37:10,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-08-18 15:37:10,341 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:37:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:37:10,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2044024613, now seen corresponding path program 35 times [2020-08-18 15:37:10,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:37:10,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123279261] [2020-08-18 15:37:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:37:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:37:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:37:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:37:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:37:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:37:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:37:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:37:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:37:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:37:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:37:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:37:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:37:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:37:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:37:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:37:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:37:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:37:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:37:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:37:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:37:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:37:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:37:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:37:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:37:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:37:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:37:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:37:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:37:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:37:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:37:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:37:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:37:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:37:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:37:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:37:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:37:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:37:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:37:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:37:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:37:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:37:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:37:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:37:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:37:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:37:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:37:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:37:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:37:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:37:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:37:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:37:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 15:37:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:37:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:37:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:37:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:37:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:37:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 15:37:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 15:37:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:37:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:37:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:37:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:37:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:37:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 15:37:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 15:37:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 15:37:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:37:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:37:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:37:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:37:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 15:37:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 15:37:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 15:37:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 15:37:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-18 15:37:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-18 15:37:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-18 15:37:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-18 15:37:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-18 15:37:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-18 15:37:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-18 15:37:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-18 15:37:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-18 15:37:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-18 15:37:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-18 15:37:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-18 15:37:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-18 15:37:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-18 15:37:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-18 15:37:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-18 15:37:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-18 15:37:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-18 15:37:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-18 15:37:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-18 15:37:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-18 15:37:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-18 15:37:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-18 15:37:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-18 15:37:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-18 15:37:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-18 15:37:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-18 15:37:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-18 15:37:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-18 15:37:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-18 15:37:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-18 15:37:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-18 15:37:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-18 15:37:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-18 15:37:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-18 15:37:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:10,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-18 15:37:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 45217 backedges. 15327 proven. 1346 refuted. 0 times theorem prover too weak. 28544 trivial. 0 not checked. [2020-08-18 15:37:11,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123279261] [2020-08-18 15:37:11,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:37:11,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 15:37:11,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105725352] [2020-08-18 15:37:11,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 15:37:11,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:37:11,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 15:37:11,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:37:11,208 INFO L87 Difference]: Start difference. First operand 628 states and 728 transitions. Second operand 17 states. [2020-08-18 15:37:11,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:37:11,958 INFO L93 Difference]: Finished difference Result 1033 states and 1215 transitions. [2020-08-18 15:37:11,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 15:37:11,959 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 863 [2020-08-18 15:37:11,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:37:11,963 INFO L225 Difference]: With dead ends: 1033 [2020-08-18 15:37:11,963 INFO L226 Difference]: Without dead ends: 629 [2020-08-18 15:37:11,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=471, Invalid=1011, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 15:37:11,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-18 15:37:12,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-18 15:37:12,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-18 15:37:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 726 transitions. [2020-08-18 15:37:12,041 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 726 transitions. Word has length 863 [2020-08-18 15:37:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:37:12,041 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 726 transitions. [2020-08-18 15:37:12,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 15:37:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 726 transitions. [2020-08-18 15:37:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2020-08-18 15:37:12,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:37:12,050 INFO L422 BasicCegarLoop]: trace histogram [112, 112, 112, 111, 111, 111, 111, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:37:12,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-08-18 15:37:12,051 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:37:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:37:12,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2034609596, now seen corresponding path program 36 times [2020-08-18 15:37:12,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:37:12,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342108270] [2020-08-18 15:37:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:37:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:37:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:37:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:37:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:37:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:37:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:37:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:37:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:37:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:37:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:37:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:37:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:37:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:37:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:37:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:37:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:37:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:37:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:37:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:37:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:37:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:37:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:37:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:37:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:37:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:37:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:37:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:37:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:37:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:37:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:37:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:37:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:37:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:37:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:37:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:37:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:37:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:37:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:37:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:37:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:37:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:37:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:37:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:37:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:37:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:37:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:37:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:37:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:37:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:37:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:37:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:37:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 15:37:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:37:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:37:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:37:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:37:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:37:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 15:37:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 15:37:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:37:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:37:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:37:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:37:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:37:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 15:37:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 15:37:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 15:37:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:37:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:37:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:37:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:37:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 15:37:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 15:37:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 15:37:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 15:37:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-18 15:37:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-18 15:37:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-18 15:37:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-18 15:37:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-18 15:37:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-18 15:37:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-18 15:37:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-18 15:37:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-18 15:37:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-18 15:37:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-18 15:37:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-18 15:37:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-18 15:37:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-18 15:37:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-18 15:37:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-18 15:37:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-18 15:37:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-18 15:37:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-18 15:37:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-18 15:37:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-18 15:37:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-18 15:37:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-18 15:37:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-18 15:37:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-18 15:37:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-18 15:37:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-18 15:37:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-18 15:37:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-18 15:37:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-18 15:37:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-18 15:37:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-18 15:37:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-18 15:37:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-18 15:37:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-18 15:37:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-18 15:37:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:12,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-18 15:37:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 14226 proven. 3289 refuted. 0 times theorem prover too weak. 28495 trivial. 0 not checked. [2020-08-18 15:37:13,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342108270] [2020-08-18 15:37:13,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:37:13,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 15:37:13,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780560153] [2020-08-18 15:37:13,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 15:37:13,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:37:13,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 15:37:13,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:37:13,162 INFO L87 Difference]: Start difference. First operand 628 states and 726 transitions. Second operand 19 states. [2020-08-18 15:37:14,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:37:14,266 INFO L93 Difference]: Finished difference Result 891 states and 1028 transitions. [2020-08-18 15:37:14,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-18 15:37:14,267 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 870 [2020-08-18 15:37:14,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:37:14,271 INFO L225 Difference]: With dead ends: 891 [2020-08-18 15:37:14,271 INFO L226 Difference]: Without dead ends: 629 [2020-08-18 15:37:14,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=774, Invalid=1578, Unknown=0, NotChecked=0, Total=2352 [2020-08-18 15:37:14,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-18 15:37:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-18 15:37:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-18 15:37:14,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 725 transitions. [2020-08-18 15:37:14,358 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 725 transitions. Word has length 870 [2020-08-18 15:37:14,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:37:14,359 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 725 transitions. [2020-08-18 15:37:14,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 15:37:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 725 transitions. [2020-08-18 15:37:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2020-08-18 15:37:14,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:37:14,368 INFO L422 BasicCegarLoop]: trace histogram [113, 113, 113, 112, 112, 112, 112, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:37:14,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-08-18 15:37:14,368 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:37:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:37:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash -206805743, now seen corresponding path program 37 times [2020-08-18 15:37:14,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:37:14,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432673485] [2020-08-18 15:37:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:37:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:37:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:37:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:37:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:37:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:37:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:37:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:37:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:37:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:37:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:37:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:37:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:37:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:37:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:37:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:37:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:37:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:37:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:37:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:37:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:37:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:37:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:37:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:37:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:37:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:37:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:37:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:37:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:37:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:37:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:37:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:37:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:37:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:37:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:37:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:37:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:37:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:37:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:37:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:37:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:37:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:37:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:37:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:37:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:37:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:37:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:37:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:37:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:37:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:37:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:37:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:37:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 15:37:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:37:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:37:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:37:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:37:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:37:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 15:37:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 15:37:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:37:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:37:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:37:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:37:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:37:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 15:37:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 15:37:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 15:37:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:37:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:37:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:37:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:37:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 15:37:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 15:37:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 15:37:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 15:37:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-18 15:37:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-18 15:37:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-18 15:37:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-18 15:37:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-18 15:37:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-18 15:37:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-18 15:37:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-18 15:37:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-18 15:37:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-18 15:37:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-18 15:37:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:14,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-18 15:37:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-18 15:37:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-08-18 15:37:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-18 15:37:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-18 15:37:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-18 15:37:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-18 15:37:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-18 15:37:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-18 15:37:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2020-08-18 15:37:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-18 15:37:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-18 15:37:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-18 15:37:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-18 15:37:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-18 15:37:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-18 15:37:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-18 15:37:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-08-18 15:37:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-18 15:37:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-18 15:37:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-18 15:37:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-18 15:37:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-18 15:37:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-18 15:37:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-18 15:37:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-18 15:37:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2020-08-18 15:37:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 46810 backedges. 12737 proven. 5535 refuted. 0 times theorem prover too weak. 28538 trivial. 0 not checked. [2020-08-18 15:37:15,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432673485] [2020-08-18 15:37:15,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:37:15,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-18 15:37:15,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409063613] [2020-08-18 15:37:15,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-18 15:37:15,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:37:15,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-18 15:37:15,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-18 15:37:15,584 INFO L87 Difference]: Start difference. First operand 628 states and 725 transitions. Second operand 21 states. [2020-08-18 15:37:17,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:37:17,280 INFO L93 Difference]: Finished difference Result 891 states and 1026 transitions. [2020-08-18 15:37:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 15:37:17,280 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 877 [2020-08-18 15:37:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:37:17,285 INFO L225 Difference]: With dead ends: 891 [2020-08-18 15:37:17,286 INFO L226 Difference]: Without dead ends: 629 [2020-08-18 15:37:17,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1172, Invalid=2368, Unknown=0, NotChecked=0, Total=3540 [2020-08-18 15:37:17,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-18 15:37:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-18 15:37:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-18 15:37:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 724 transitions. [2020-08-18 15:37:17,379 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 724 transitions. Word has length 877 [2020-08-18 15:37:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:37:17,379 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 724 transitions. [2020-08-18 15:37:17,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-18 15:37:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 724 transitions. [2020-08-18 15:37:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2020-08-18 15:37:17,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:37:17,389 INFO L422 BasicCegarLoop]: trace histogram [114, 114, 114, 113, 113, 113, 113, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:37:17,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-08-18 15:37:17,389 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:37:17,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:37:17,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1882081448, now seen corresponding path program 38 times [2020-08-18 15:37:17,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:37:17,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596268048] [2020-08-18 15:37:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:37:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:37:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:37:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:37:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:37:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:37:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:37:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:37:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:37:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:37:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 15:37:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 15:37:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:37:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 15:37:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:37:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:37:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 15:37:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:37:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 15:37:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:37:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 15:37:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 15:37:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:37:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 15:37:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 15:37:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 15:37:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 15:37:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 15:37:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 15:37:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 15:37:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 15:37:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 15:37:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 15:37:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 15:37:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 15:37:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 15:37:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 15:37:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 15:37:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 15:37:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 15:37:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 15:37:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 15:37:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 15:37:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 15:37:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 15:37:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 15:37:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 15:37:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 15:37:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 15:37:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 15:37:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 15:37:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 15:37:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 15:37:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 15:37:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 15:37:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 15:37:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 15:37:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 15:37:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 15:37:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 15:37:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 15:37:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 15:37:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 15:37:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 15:37:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 15:37:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 15:37:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 15:37:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 15:37:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 15:37:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 15:37:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 15:37:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 15:37:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 15:37:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 15:37:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 15:37:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 15:37:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:17,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-18 15:37:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-18 15:37:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-18 15:37:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-18 15:37:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-18 15:37:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-18 15:37:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-18 15:37:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-18 15:37:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-18 15:37:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-18 15:37:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-18 15:37:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-18 15:37:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-18 15:37:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-08-18 15:37:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-18 15:37:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-18 15:37:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-18 15:37:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:37:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-18 15:37:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat