/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -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 21:14:30,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:14:30,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:14:30,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:14:30,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:14:30,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:14:30,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:14:30,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:14:30,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:14:30,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:14:30,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:14:30,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:14:30,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:14:30,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:14:30,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:14:30,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:14:30,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:14:30,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:14:30,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:14:30,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:14:30,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:14:30,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:14:30,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:14:30,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:14:30,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:14:30,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:14:30,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:14:30,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:14:30,732 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 21:14:30,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:14:30,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:14:30,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:14:30,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:14:30,763 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:14:30,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:14:30,763 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:14:30,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:14:30,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:14:30,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:14:30,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:14:30,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:14:30,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:14:30,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:14:30,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:14:30,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:14:30,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:14:30,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:14:30,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:14:30,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:14:30,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:14:30,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:14:30,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:14:30,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:14:30,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:14:30,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:14:30,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:14:30,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:14:30,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:14:30,768 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:14:31,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:14:31,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:14:31,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:14:31,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:14:31,125 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:14:31,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-18 21:14:31,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc45c8b5c/095d361f11ad4d51b41666b1332f45ad/FLAGbf0f76e1a [2020-08-18 21:14:31,673 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:14:31,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-18 21:14:31,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc45c8b5c/095d361f11ad4d51b41666b1332f45ad/FLAGbf0f76e1a [2020-08-18 21:14:32,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc45c8b5c/095d361f11ad4d51b41666b1332f45ad [2020-08-18 21:14:32,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:14:32,037 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:14:32,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:14:32,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:14:32,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:14:32,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:14:32" (1/1) ... [2020-08-18 21:14:32,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217f90c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32, skipping insertion in model container [2020-08-18 21:14:32,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:14:32" (1/1) ... [2020-08-18 21:14:32,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:14:32,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:14:32,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:14:32,258 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:14:32,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:14:32,286 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:14:32,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32 WrapperNode [2020-08-18 21:14:32,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:14:32,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:14:32,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:14:32,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:14:32,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32" (1/1) ... [2020-08-18 21:14:32,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32" (1/1) ... [2020-08-18 21:14:32,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32" (1/1) ... [2020-08-18 21:14:32,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32" (1/1) ... [2020-08-18 21:14:32,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32" (1/1) ... [2020-08-18 21:14:32,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32" (1/1) ... [2020-08-18 21:14:32,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32" (1/1) ... [2020-08-18 21:14:32,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:14:32,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:14:32,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:14:32,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:14:32,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32" (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 21:14:32,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:14:32,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:14:32,472 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 21:14:32,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 21:14:32,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:14:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:14:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 21:14:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 21:14:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 21:14:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:14:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:14:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:14:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:14:32,723 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:14:32,723 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 21:14:32,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:14:32 BoogieIcfgContainer [2020-08-18 21:14:32,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:14:32,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:14:32,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:14:32,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:14:32,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:14:32" (1/3) ... [2020-08-18 21:14:32,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e7ce5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:14:32, skipping insertion in model container [2020-08-18 21:14:32,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:32" (2/3) ... [2020-08-18 21:14:32,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e7ce5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:14:32, skipping insertion in model container [2020-08-18 21:14:32,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:14:32" (3/3) ... [2020-08-18 21:14:32,737 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-08-18 21:14:32,749 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:14:32,759 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:14:32,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:14:32,810 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:14:32,810 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:14:32,810 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:14:32,810 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:14:32,811 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:14:32,811 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:14:32,811 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:14:32,811 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:14:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-18 21:14:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 21:14:32,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:32,841 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 21:14:32,841 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:32,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1671060194, now seen corresponding path program 1 times [2020-08-18 21:14:32,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:32,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619708578] [2020-08-18 21:14:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:33,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:33,125 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 21:14:33,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619708578] [2020-08-18 21:14:33,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:14:33,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:14:33,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183699758] [2020-08-18 21:14:33,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:14:33,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:33,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:14:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:14:33,153 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 8 states. [2020-08-18 21:14:33,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:33,528 INFO L93 Difference]: Finished difference Result 68 states and 95 transitions. [2020-08-18 21:14:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:14:33,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-18 21:14:33,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:33,540 INFO L225 Difference]: With dead ends: 68 [2020-08-18 21:14:33,540 INFO L226 Difference]: Without dead ends: 36 [2020-08-18 21:14:33,545 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 21:14:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-18 21:14:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-08-18 21:14:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 21:14:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-18 21:14:33,593 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2020-08-18 21:14:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:33,594 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-18 21:14:33,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:14:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-18 21:14:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 21:14:33,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:33,596 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 21:14:33,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:14:33,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:33,597 INFO L82 PathProgramCache]: Analyzing trace with hash -764881689, now seen corresponding path program 1 times [2020-08-18 21:14:33,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:33,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859638588] [2020-08-18 21:14:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:33,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:33,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:14:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:33,721 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 21:14:33,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859638588] [2020-08-18 21:14:33,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:14:33,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:14:33,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496714226] [2020-08-18 21:14:33,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:14:33,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:33,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:14:33,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:14:33,726 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2020-08-18 21:14:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:33,896 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-08-18 21:14:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:14:33,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-18 21:14:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:33,900 INFO L225 Difference]: With dead ends: 57 [2020-08-18 21:14:33,901 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 21:14:33,902 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 21:14:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 21:14:33,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-18 21:14:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-18 21:14:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-18 21:14:33,912 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2020-08-18 21:14:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:33,913 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-18 21:14:33,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:14:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-18 21:14:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 21:14:33,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:33,915 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 21:14:33,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:14:33,915 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:33,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:33,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1134636734, now seen corresponding path program 1 times [2020-08-18 21:14:33,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:33,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984074262] [2020-08-18 21:14:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,035 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 21:14:34,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984074262] [2020-08-18 21:14:34,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:34,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 21:14:34,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509398733] [2020-08-18 21:14:34,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:14:34,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:34,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:14:34,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:14:34,038 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-08-18 21:14:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:34,268 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-08-18 21:14:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 21:14:34,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-08-18 21:14:34,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:34,270 INFO L225 Difference]: With dead ends: 70 [2020-08-18 21:14:34,270 INFO L226 Difference]: Without dead ends: 51 [2020-08-18 21:14:34,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:14:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-18 21:14:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2020-08-18 21:14:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 21:14:34,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-08-18 21:14:34,295 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 28 [2020-08-18 21:14:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:34,295 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-08-18 21:14:34,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:14:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-08-18 21:14:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 21:14:34,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:34,306 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 21:14:34,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:14:34,307 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:34,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:34,307 INFO L82 PathProgramCache]: Analyzing trace with hash 83931911, now seen corresponding path program 2 times [2020-08-18 21:14:34,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:34,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063458545] [2020-08-18 21:14:34,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 21:14:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,399 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 21:14:34,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063458545] [2020-08-18 21:14:34,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:34,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 21:14:34,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862373338] [2020-08-18 21:14:34,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:14:34,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:34,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:14:34,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:14:34,410 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-08-18 21:14:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:34,533 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-08-18 21:14:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:14:34,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-08-18 21:14:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:34,536 INFO L225 Difference]: With dead ends: 63 [2020-08-18 21:14:34,537 INFO L226 Difference]: Without dead ends: 44 [2020-08-18 21:14:34,538 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 21:14:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-18 21:14:34,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-18 21:14:34,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 21:14:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-08-18 21:14:34,557 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-08-18 21:14:34,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:34,557 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-08-18 21:14:34,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:14:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-08-18 21:14:34,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 21:14:34,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:34,560 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 21:14:34,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:14:34,562 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:34,563 INFO L82 PathProgramCache]: Analyzing trace with hash 848296232, now seen corresponding path program 1 times [2020-08-18 21:14:34,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:34,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429220973] [2020-08-18 21:14:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 21:14:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,652 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 21:14:34,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429220973] [2020-08-18 21:14:34,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:14:34,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:14:34,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092391071] [2020-08-18 21:14:34,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:14:34,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:34,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:14:34,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:14:34,657 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2020-08-18 21:14:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:34,757 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-08-18 21:14:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:14:34,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-18 21:14:34,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:34,759 INFO L225 Difference]: With dead ends: 75 [2020-08-18 21:14:34,759 INFO L226 Difference]: Without dead ends: 42 [2020-08-18 21:14:34,760 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 21:14:34,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-18 21:14:34,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-18 21:14:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-18 21:14:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-18 21:14:34,771 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2020-08-18 21:14:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:34,771 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-18 21:14:34,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:14:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-18 21:14:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-18 21:14:34,773 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:34,773 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 21:14:34,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:14:34,774 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:34,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:34,774 INFO L82 PathProgramCache]: Analyzing trace with hash -670641491, now seen corresponding path program 2 times [2020-08-18 21:14:34,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:34,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806600897] [2020-08-18 21:14:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:34,890 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 21:14:34,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806600897] [2020-08-18 21:14:34,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:34,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:14:34,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040368253] [2020-08-18 21:14:34,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:14:34,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:34,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:14:34,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:14:34,894 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-08-18 21:14:35,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:35,163 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-08-18 21:14:35,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:14:35,163 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-08-18 21:14:35,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:35,165 INFO L225 Difference]: With dead ends: 60 [2020-08-18 21:14:35,165 INFO L226 Difference]: Without dead ends: 58 [2020-08-18 21:14:35,166 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 21:14:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-18 21:14:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-08-18 21:14:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-18 21:14:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-08-18 21:14:35,177 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 41 [2020-08-18 21:14:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:35,178 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-08-18 21:14:35,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:14:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-08-18 21:14:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 21:14:35,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:35,180 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 21:14:35,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:14:35,180 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:35,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:35,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2015935239, now seen corresponding path program 3 times [2020-08-18 21:14:35,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:35,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712161638] [2020-08-18 21:14:35,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:14:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,309 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 21:14:35,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712161638] [2020-08-18 21:14:35,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:35,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:14:35,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102373770] [2020-08-18 21:14:35,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:14:35,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:35,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:14:35,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:14:35,312 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 10 states. [2020-08-18 21:14:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:35,527 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-08-18 21:14:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 21:14:35,527 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-08-18 21:14:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:35,529 INFO L225 Difference]: With dead ends: 74 [2020-08-18 21:14:35,529 INFO L226 Difference]: Without dead ends: 72 [2020-08-18 21:14:35,530 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 21:14:35,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-18 21:14:35,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-08-18 21:14:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-18 21:14:35,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-08-18 21:14:35,543 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 51 [2020-08-18 21:14:35,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:35,543 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-08-18 21:14:35,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:14:35,544 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-08-18 21:14:35,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 21:14:35,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:35,545 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 21:14:35,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:14:35,546 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:35,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:35,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1770393310, now seen corresponding path program 4 times [2020-08-18 21:14:35,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:35,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358604917] [2020-08-18 21:14:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:14:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,639 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 21:14:35,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358604917] [2020-08-18 21:14:35,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:35,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 21:14:35,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793569334] [2020-08-18 21:14:35,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:14:35,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:35,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:14:35,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:14:35,642 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 9 states. [2020-08-18 21:14:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:35,864 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-08-18 21:14:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 21:14:35,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-18 21:14:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:35,866 INFO L225 Difference]: With dead ends: 97 [2020-08-18 21:14:35,866 INFO L226 Difference]: Without dead ends: 61 [2020-08-18 21:14:35,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:14:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-18 21:14:35,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-18 21:14:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-18 21:14:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-08-18 21:14:35,879 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 58 [2020-08-18 21:14:35,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:35,879 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-08-18 21:14:35,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:14:35,879 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-08-18 21:14:35,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 21:14:35,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:35,881 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 21:14:35,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:14:35,881 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:35,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:35,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1336799475, now seen corresponding path program 5 times [2020-08-18 21:14:35,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:35,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537354618] [2020-08-18 21:14:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,016 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 21:14:36,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537354618] [2020-08-18 21:14:36,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:36,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 21:14:36,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381107352] [2020-08-18 21:14:36,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:14:36,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:36,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:14:36,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:14:36,019 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 12 states. [2020-08-18 21:14:36,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:36,419 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-08-18 21:14:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:14:36,419 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-08-18 21:14:36,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:36,421 INFO L225 Difference]: With dead ends: 90 [2020-08-18 21:14:36,421 INFO L226 Difference]: Without dead ends: 88 [2020-08-18 21:14:36,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2020-08-18 21:14:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-18 21:14:36,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2020-08-18 21:14:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-18 21:14:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-08-18 21:14:36,433 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 65 [2020-08-18 21:14:36,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:36,433 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-08-18 21:14:36,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:14:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-08-18 21:14:36,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-18 21:14:36,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:36,435 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 21:14:36,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:14:36,435 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:36,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1858831946, now seen corresponding path program 6 times [2020-08-18 21:14:36,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:36,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710006209] [2020-08-18 21:14:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:36,583 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 21:14:36,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710006209] [2020-08-18 21:14:36,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:36,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 21:14:36,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777761289] [2020-08-18 21:14:36,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:14:36,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:36,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:14:36,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:14:36,586 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 12 states. [2020-08-18 21:14:37,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:37,016 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2020-08-18 21:14:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 21:14:37,017 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-18 21:14:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:37,018 INFO L225 Difference]: With dead ends: 141 [2020-08-18 21:14:37,019 INFO L226 Difference]: Without dead ends: 96 [2020-08-18 21:14:37,020 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 21:14:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-18 21:14:37,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-08-18 21:14:37,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-18 21:14:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-08-18 21:14:37,036 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 72 [2020-08-18 21:14:37,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:37,036 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-08-18 21:14:37,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:14:37,036 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-08-18 21:14:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 21:14:37,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:37,039 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 21:14:37,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:14:37,039 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:37,039 INFO L82 PathProgramCache]: Analyzing trace with hash 179803111, now seen corresponding path program 7 times [2020-08-18 21:14:37,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:37,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303383234] [2020-08-18 21:14:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 21:14:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 21:14:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 21:14:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,210 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 21:14:37,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303383234] [2020-08-18 21:14:37,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:37,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 21:14:37,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093372977] [2020-08-18 21:14:37,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:14:37,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:37,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:14:37,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:14:37,212 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 11 states. [2020-08-18 21:14:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:37,542 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2020-08-18 21:14:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:14:37,542 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 109 [2020-08-18 21:14:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:37,543 INFO L225 Difference]: With dead ends: 155 [2020-08-18 21:14:37,544 INFO L226 Difference]: Without dead ends: 98 [2020-08-18 21:14:37,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2020-08-18 21:14:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-18 21:14:37,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-08-18 21:14:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-18 21:14:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-18 21:14:37,570 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 109 [2020-08-18 21:14:37,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:37,571 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-18 21:14:37,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:14:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-18 21:14:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 21:14:37,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:37,573 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 21:14:37,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:14:37,573 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:37,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:37,574 INFO L82 PathProgramCache]: Analyzing trace with hash -888781782, now seen corresponding path program 8 times [2020-08-18 21:14:37,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:37,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229943142] [2020-08-18 21:14:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 21:14:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:37,704 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 21:14:37,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229943142] [2020-08-18 21:14:37,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:37,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 21:14:37,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106283231] [2020-08-18 21:14:37,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:14:37,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:37,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:14:37,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:14:37,706 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 11 states. [2020-08-18 21:14:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:38,010 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2020-08-18 21:14:38,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 21:14:38,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-08-18 21:14:38,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:38,012 INFO L225 Difference]: With dead ends: 178 [2020-08-18 21:14:38,012 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 21:14:38,014 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 21:14:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 21:14:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-08-18 21:14:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 21:14:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2020-08-18 21:14:38,031 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 116 [2020-08-18 21:14:38,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:38,031 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2020-08-18 21:14:38,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:14:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2020-08-18 21:14:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-18 21:14:38,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:38,033 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 21:14:38,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 21:14:38,034 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:38,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:38,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1465957677, now seen corresponding path program 9 times [2020-08-18 21:14:38,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:38,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889189687] [2020-08-18 21:14:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:38,251 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 21:14:38,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889189687] [2020-08-18 21:14:38,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:38,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 21:14:38,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672737915] [2020-08-18 21:14:38,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 21:14:38,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:38,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 21:14:38,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:14:38,254 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 14 states. [2020-08-18 21:14:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:38,783 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2020-08-18 21:14:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:14:38,784 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 123 [2020-08-18 21:14:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:38,786 INFO L225 Difference]: With dead ends: 136 [2020-08-18 21:14:38,786 INFO L226 Difference]: Without dead ends: 134 [2020-08-18 21:14:38,789 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 21:14:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-18 21:14:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2020-08-18 21:14:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 21:14:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-08-18 21:14:38,815 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 123 [2020-08-18 21:14:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:38,816 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-08-18 21:14:38,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 21:14:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-08-18 21:14:38,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 21:14:38,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:38,820 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 21:14:38,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 21:14:38,820 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:38,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:38,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1688384554, now seen corresponding path program 10 times [2020-08-18 21:14:38,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:38,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650425263] [2020-08-18 21:14:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:39,179 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 21:14:39,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650425263] [2020-08-18 21:14:39,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:39,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 21:14:39,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398236545] [2020-08-18 21:14:39,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 21:14:39,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:39,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 21:14:39,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:14:39,184 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 14 states. [2020-08-18 21:14:39,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:39,815 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2020-08-18 21:14:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 21:14:39,816 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2020-08-18 21:14:39,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:39,823 INFO L225 Difference]: With dead ends: 234 [2020-08-18 21:14:39,823 INFO L226 Difference]: Without dead ends: 171 [2020-08-18 21:14:39,825 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 21:14:39,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-18 21:14:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 153. [2020-08-18 21:14:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 21:14:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2020-08-18 21:14:39,856 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 130 [2020-08-18 21:14:39,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:39,857 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2020-08-18 21:14:39,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 21:14:39,857 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2020-08-18 21:14:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 21:14:39,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:39,859 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 21:14:39,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 21:14:39,860 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:39,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:39,860 INFO L82 PathProgramCache]: Analyzing trace with hash -840848228, now seen corresponding path program 11 times [2020-08-18 21:14:39,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:39,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573689668] [2020-08-18 21:14:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 21:14:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,092 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 21:14:40,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573689668] [2020-08-18 21:14:40,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:40,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 21:14:40,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382372475] [2020-08-18 21:14:40,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 21:14:40,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:40,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 21:14:40,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:14:40,095 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand 13 states. [2020-08-18 21:14:40,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:40,536 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2020-08-18 21:14:40,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 21:14:40,536 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-18 21:14:40,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:40,538 INFO L225 Difference]: With dead ends: 218 [2020-08-18 21:14:40,538 INFO L226 Difference]: Without dead ends: 155 [2020-08-18 21:14:40,543 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 21:14:40,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-18 21:14:40,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-08-18 21:14:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 21:14:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2020-08-18 21:14:40,568 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 154 [2020-08-18 21:14:40,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:40,569 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2020-08-18 21:14:40,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 21:14:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2020-08-18 21:14:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-18 21:14:40,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:40,574 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 21:14:40,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 21:14:40,574 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:40,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1311982393, now seen corresponding path program 12 times [2020-08-18 21:14:40,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:40,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379667511] [2020-08-18 21:14:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:40,836 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 21:14:40,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379667511] [2020-08-18 21:14:40,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:40,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 21:14:40,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20341751] [2020-08-18 21:14:40,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 21:14:40,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:40,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 21:14:40,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:14:40,840 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand 15 states. [2020-08-18 21:14:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:41,349 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2020-08-18 21:14:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:14:41,351 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 161 [2020-08-18 21:14:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:41,353 INFO L225 Difference]: With dead ends: 184 [2020-08-18 21:14:41,353 INFO L226 Difference]: Without dead ends: 182 [2020-08-18 21:14:41,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-08-18 21:14:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-18 21:14:41,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 167. [2020-08-18 21:14:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-18 21:14:41,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 188 transitions. [2020-08-18 21:14:41,374 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 188 transitions. Word has length 161 [2020-08-18 21:14:41,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:41,374 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 188 transitions. [2020-08-18 21:14:41,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 21:14:41,375 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 188 transitions. [2020-08-18 21:14:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-18 21:14:41,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:41,377 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 21:14:41,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 21:14:41,378 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:41,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:41,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1425986384, now seen corresponding path program 13 times [2020-08-18 21:14:41,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:41,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956363646] [2020-08-18 21:14:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:41,597 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 21:14:41,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956363646] [2020-08-18 21:14:41,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:41,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 21:14:41,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472809342] [2020-08-18 21:14:41,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 21:14:41,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:41,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 21:14:41,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:14:41,600 INFO L87 Difference]: Start difference. First operand 167 states and 188 transitions. Second operand 16 states. [2020-08-18 21:14:42,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:42,472 INFO L93 Difference]: Finished difference Result 295 states and 344 transitions. [2020-08-18 21:14:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-18 21:14:42,472 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 168 [2020-08-18 21:14:42,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:42,475 INFO L225 Difference]: With dead ends: 295 [2020-08-18 21:14:42,476 INFO L226 Difference]: Without dead ends: 218 [2020-08-18 21:14:42,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=642, Invalid=1614, Unknown=0, NotChecked=0, Total=2256 [2020-08-18 21:14:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-08-18 21:14:42,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 187. [2020-08-18 21:14:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-08-18 21:14:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 216 transitions. [2020-08-18 21:14:42,504 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 216 transitions. Word has length 168 [2020-08-18 21:14:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:42,508 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 216 transitions. [2020-08-18 21:14:42,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 21:14:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 216 transitions. [2020-08-18 21:14:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-08-18 21:14:42,512 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:42,512 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 21:14:42,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 21:14:42,512 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:42,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:42,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1410050128, now seen corresponding path program 14 times [2020-08-18 21:14:42,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:42,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525542736] [2020-08-18 21:14:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 21:14:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-18 21:14:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-18 21:14:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:42,782 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 21:14:42,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525542736] [2020-08-18 21:14:42,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:42,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 21:14:42,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755279564] [2020-08-18 21:14:42,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 21:14:42,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:42,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 21:14:42,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:14:42,785 INFO L87 Difference]: Start difference. First operand 187 states and 216 transitions. Second operand 15 states. [2020-08-18 21:14:43,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:43,456 INFO L93 Difference]: Finished difference Result 304 states and 358 transitions. [2020-08-18 21:14:43,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 21:14:43,457 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2020-08-18 21:14:43,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:43,459 INFO L225 Difference]: With dead ends: 304 [2020-08-18 21:14:43,459 INFO L226 Difference]: Without dead ends: 209 [2020-08-18 21:14:43,460 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 21:14:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-08-18 21:14:43,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 202. [2020-08-18 21:14:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-18 21:14:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2020-08-18 21:14:43,486 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 226 [2020-08-18 21:14:43,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:43,486 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2020-08-18 21:14:43,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 21:14:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2020-08-18 21:14:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-08-18 21:14:43,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:43,490 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 21:14:43,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 21:14:43,491 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:43,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:43,491 INFO L82 PathProgramCache]: Analyzing trace with hash 400238009, now seen corresponding path program 15 times [2020-08-18 21:14:43,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:43,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945324579] [2020-08-18 21:14:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-18 21:14:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:43,735 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 21:14:43,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945324579] [2020-08-18 21:14:43,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:43,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 21:14:43,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32188315] [2020-08-18 21:14:43,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 21:14:43,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:43,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 21:14:43,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:14:43,738 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand 13 states. [2020-08-18 21:14:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:44,193 INFO L93 Difference]: Finished difference Result 356 states and 421 transitions. [2020-08-18 21:14:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 21:14:44,193 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 233 [2020-08-18 21:14:44,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:44,195 INFO L225 Difference]: With dead ends: 356 [2020-08-18 21:14:44,196 INFO L226 Difference]: Without dead ends: 203 [2020-08-18 21:14:44,197 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 21:14:44,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-08-18 21:14:44,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2020-08-18 21:14:44,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-18 21:14:44,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2020-08-18 21:14:44,222 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 233 [2020-08-18 21:14:44,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:44,222 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2020-08-18 21:14:44,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 21:14:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2020-08-18 21:14:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-18 21:14:44,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:44,225 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 21:14:44,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 21:14:44,225 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:44,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1039853412, now seen corresponding path program 16 times [2020-08-18 21:14:44,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:44,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278589292] [2020-08-18 21:14:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:44,563 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 21:14:44,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278589292] [2020-08-18 21:14:44,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:44,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 21:14:44,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628485375] [2020-08-18 21:14:44,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 21:14:44,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:44,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 21:14:44,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:14:44,565 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 16 states. [2020-08-18 21:14:45,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:45,693 INFO L93 Difference]: Finished difference Result 398 states and 480 transitions. [2020-08-18 21:14:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 21:14:45,696 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 240 [2020-08-18 21:14:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:45,699 INFO L225 Difference]: With dead ends: 398 [2020-08-18 21:14:45,699 INFO L226 Difference]: Without dead ends: 306 [2020-08-18 21:14:45,700 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 21:14:45,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-18 21:14:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 267. [2020-08-18 21:14:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-18 21:14:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 318 transitions. [2020-08-18 21:14:45,735 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 318 transitions. Word has length 240 [2020-08-18 21:14:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:45,736 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 318 transitions. [2020-08-18 21:14:45,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 21:14:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 318 transitions. [2020-08-18 21:14:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-18 21:14:45,739 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:45,739 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 21:14:45,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 21:14:45,739 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:45,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1581346975, now seen corresponding path program 17 times [2020-08-18 21:14:45,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:45,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116335717] [2020-08-18 21:14:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 21:14:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:14:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:14:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:14:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:45,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:14:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:46,043 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 21:14:46,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116335717] [2020-08-18 21:14:46,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:46,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 21:14:46,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170539024] [2020-08-18 21:14:46,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 21:14:46,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:46,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 21:14:46,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:14:46,047 INFO L87 Difference]: Start difference. First operand 267 states and 318 transitions. Second operand 15 states. [2020-08-18 21:14:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:46,801 INFO L93 Difference]: Finished difference Result 461 states and 558 transitions. [2020-08-18 21:14:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 21:14:46,802 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 271 [2020-08-18 21:14:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:46,804 INFO L225 Difference]: With dead ends: 461 [2020-08-18 21:14:46,804 INFO L226 Difference]: Without dead ends: 286 [2020-08-18 21:14:46,806 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 21:14:46,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-18 21:14:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 239. [2020-08-18 21:14:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 21:14:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 278 transitions. [2020-08-18 21:14:46,838 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 278 transitions. Word has length 271 [2020-08-18 21:14:46,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:46,838 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 278 transitions. [2020-08-18 21:14:46,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 21:14:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 278 transitions. [2020-08-18 21:14:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-08-18 21:14:46,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:46,842 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 21:14:46,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 21:14:46,842 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:46,842 INFO L82 PathProgramCache]: Analyzing trace with hash -2078560834, now seen corresponding path program 18 times [2020-08-18 21:14:46,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:46,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382655037] [2020-08-18 21:14:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:14:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:14:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:14:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:14:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:14:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:47,356 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 21:14:47,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382655037] [2020-08-18 21:14:47,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:47,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 21:14:47,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556137947] [2020-08-18 21:14:47,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 21:14:47,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:47,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 21:14:47,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:14:47,363 INFO L87 Difference]: Start difference. First operand 239 states and 278 transitions. Second operand 17 states. [2020-08-18 21:14:48,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:48,103 INFO L93 Difference]: Finished difference Result 312 states and 355 transitions. [2020-08-18 21:14:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 21:14:48,105 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 278 [2020-08-18 21:14:48,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:48,110 INFO L225 Difference]: With dead ends: 312 [2020-08-18 21:14:48,110 INFO L226 Difference]: Without dead ends: 310 [2020-08-18 21:14:48,111 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 21:14:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-18 21:14:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 295. [2020-08-18 21:14:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-18 21:14:48,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 336 transitions. [2020-08-18 21:14:48,158 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 336 transitions. Word has length 278 [2020-08-18 21:14:48,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:48,161 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 336 transitions. [2020-08-18 21:14:48,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 21:14:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 336 transitions. [2020-08-18 21:14:48,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-08-18 21:14:48,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:48,165 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 21:14:48,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 21:14:48,166 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:48,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:48,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1263938933, now seen corresponding path program 19 times [2020-08-18 21:14:48,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:48,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905206456] [2020-08-18 21:14:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:14:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:14:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:14:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:14:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:14:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:14:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:48,567 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 21:14:48,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905206456] [2020-08-18 21:14:48,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:48,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 21:14:48,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534088713] [2020-08-18 21:14:48,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 21:14:48,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:48,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 21:14:48,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:14:48,576 INFO L87 Difference]: Start difference. First operand 295 states and 336 transitions. Second operand 18 states. [2020-08-18 21:14:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:50,022 INFO L93 Difference]: Finished difference Result 501 states and 595 transitions. [2020-08-18 21:14:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-18 21:14:50,023 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 285 [2020-08-18 21:14:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:50,026 INFO L225 Difference]: With dead ends: 501 [2020-08-18 21:14:50,026 INFO L226 Difference]: Without dead ends: 410 [2020-08-18 21:14:50,028 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 21:14:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-08-18 21:14:50,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 316. [2020-08-18 21:14:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-18 21:14:50,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 365 transitions. [2020-08-18 21:14:50,085 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 365 transitions. Word has length 285 [2020-08-18 21:14:50,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:50,085 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 365 transitions. [2020-08-18 21:14:50,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 21:14:50,086 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 365 transitions. [2020-08-18 21:14:50,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-08-18 21:14:50,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:50,088 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 21:14:50,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 21:14:50,089 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:50,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:50,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1910860175, now seen corresponding path program 20 times [2020-08-18 21:14:50,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:50,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017825778] [2020-08-18 21:14:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:14:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:14:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:14:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:14:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:14:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-18 21:14:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:14:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:14:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:14:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:14:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:14:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:50,504 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 21:14:50,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017825778] [2020-08-18 21:14:50,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:50,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 21:14:50,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561984537] [2020-08-18 21:14:50,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 21:14:50,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:50,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 21:14:50,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:14:50,506 INFO L87 Difference]: Start difference. First operand 316 states and 365 transitions. Second operand 17 states. [2020-08-18 21:14:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:51,354 INFO L93 Difference]: Finished difference Result 538 states and 640 transitions. [2020-08-18 21:14:51,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 21:14:51,354 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 323 [2020-08-18 21:14:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:51,357 INFO L225 Difference]: With dead ends: 538 [2020-08-18 21:14:51,357 INFO L226 Difference]: Without dead ends: 340 [2020-08-18 21:14:51,359 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 21:14:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-18 21:14:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 334. [2020-08-18 21:14:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-18 21:14:51,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 387 transitions. [2020-08-18 21:14:51,404 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 387 transitions. Word has length 323 [2020-08-18 21:14:51,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:51,405 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 387 transitions. [2020-08-18 21:14:51,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 21:14:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 387 transitions. [2020-08-18 21:14:51,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-18 21:14:51,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:51,408 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 21:14:51,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 21:14:51,411 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:51,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:51,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1089690308, now seen corresponding path program 21 times [2020-08-18 21:14:51,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:51,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332833531] [2020-08-18 21:14:51,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:14:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:14:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:14:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:14:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:14:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:14:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:14:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:14:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:14:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:14:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:14:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:14:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:51,887 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 21:14:51,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332833531] [2020-08-18 21:14:51,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:51,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 21:14:51,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269559749] [2020-08-18 21:14:51,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 21:14:51,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:51,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 21:14:51,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:14:51,889 INFO L87 Difference]: Start difference. First operand 334 states and 387 transitions. Second operand 15 states. [2020-08-18 21:14:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:52,833 INFO L93 Difference]: Finished difference Result 490 states and 557 transitions. [2020-08-18 21:14:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 21:14:52,833 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 330 [2020-08-18 21:14:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:52,838 INFO L225 Difference]: With dead ends: 490 [2020-08-18 21:14:52,838 INFO L226 Difference]: Without dead ends: 488 [2020-08-18 21:14:52,839 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 21:14:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-18 21:14:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 443. [2020-08-18 21:14:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-18 21:14:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 510 transitions. [2020-08-18 21:14:52,897 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 510 transitions. Word has length 330 [2020-08-18 21:14:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:52,898 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 510 transitions. [2020-08-18 21:14:52,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 21:14:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 510 transitions. [2020-08-18 21:14:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-08-18 21:14:52,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:52,902 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 21:14:52,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-18 21:14:52,902 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:52,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1713724203, now seen corresponding path program 22 times [2020-08-18 21:14:52,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:52,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624016578] [2020-08-18 21:14:52,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:14:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:14:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:14:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:14:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:14:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:14:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:14:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:14:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:14:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:14:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:14:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:14:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-18 21:14:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-18 21:14:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-18 21:14:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-18 21:14:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-18 21:14:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-18 21:14:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:53,584 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 21:14:53,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624016578] [2020-08-18 21:14:53,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:53,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 21:14:53,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439100997] [2020-08-18 21:14:53,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 21:14:53,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:53,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 21:14:53,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:14:53,587 INFO L87 Difference]: Start difference. First operand 443 states and 510 transitions. Second operand 18 states. [2020-08-18 21:14:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:54,380 INFO L93 Difference]: Finished difference Result 503 states and 584 transitions. [2020-08-18 21:14:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 21:14:54,381 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 375 [2020-08-18 21:14:54,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:54,388 INFO L225 Difference]: With dead ends: 503 [2020-08-18 21:14:54,388 INFO L226 Difference]: Without dead ends: 501 [2020-08-18 21:14:54,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 21:14:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-08-18 21:14:54,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 457. [2020-08-18 21:14:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-18 21:14:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 526 transitions. [2020-08-18 21:14:54,458 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 526 transitions. Word has length 375 [2020-08-18 21:14:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:54,459 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 526 transitions. [2020-08-18 21:14:54,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 21:14:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 526 transitions. [2020-08-18 21:14:54,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-08-18 21:14:54,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:54,463 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 21:14:54,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-18 21:14:54,465 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:54,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:54,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1934385026, now seen corresponding path program 23 times [2020-08-18 21:14:54,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:54,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785914010] [2020-08-18 21:14:54,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:14:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:14:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:14:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:14:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:14:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:14:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:14:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:14:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:14:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:14:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:14:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:14:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-18 21:14:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-18 21:14:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-18 21:14:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-18 21:14:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-18 21:14:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-18 21:14:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-08-18 21:14:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:54,893 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 21:14:54,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785914010] [2020-08-18 21:14:54,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:54,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 21:14:54,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611532566] [2020-08-18 21:14:54,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 21:14:54,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:54,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 21:14:54,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:14:54,896 INFO L87 Difference]: Start difference. First operand 457 states and 526 transitions. Second operand 13 states. [2020-08-18 21:14:55,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:55,496 INFO L93 Difference]: Finished difference Result 947 states and 1112 transitions. [2020-08-18 21:14:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 21:14:55,497 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 382 [2020-08-18 21:14:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:55,501 INFO L225 Difference]: With dead ends: 947 [2020-08-18 21:14:55,501 INFO L226 Difference]: Without dead ends: 506 [2020-08-18 21:14:55,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=345, Invalid=711, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 21:14:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-18 21:14:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 503. [2020-08-18 21:14:55,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-18 21:14:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 595 transitions. [2020-08-18 21:14:55,569 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 595 transitions. Word has length 382 [2020-08-18 21:14:55,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:55,570 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 595 transitions. [2020-08-18 21:14:55,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 21:14:55,570 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 595 transitions. [2020-08-18 21:14:55,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-08-18 21:14:55,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:55,575 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 21:14:55,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-18 21:14:55,575 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:55,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1577141198, now seen corresponding path program 24 times [2020-08-18 21:14:55,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:55,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960026654] [2020-08-18 21:14:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-18 21:14:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-18 21:14:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-18 21:14:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-18 21:14:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-18 21:14:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-08-18 21:14:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-18 21:14:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 21:14:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-18 21:14:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-18 21:14:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-18 21:14:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-18 21:14:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-18 21:14:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:14:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:14:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-18 21:14:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-18 21:14:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-18 21:14:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:14:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:14:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:14:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-18 21:14:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-18 21:14:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-18 21:14:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:14:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:14:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:14:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:55,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:14:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,018 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 21:14:56,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960026654] [2020-08-18 21:14:56,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:56,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 21:14:56,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297145968] [2020-08-18 21:14:56,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:14:56,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:56,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:14:56,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:14:56,022 INFO L87 Difference]: Start difference. First operand 503 states and 595 transitions. Second operand 11 states. [2020-08-18 21:14:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:56,407 INFO L93 Difference]: Finished difference Result 702 states and 825 transitions. [2020-08-18 21:14:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 21:14:56,407 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 454 [2020-08-18 21:14:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:56,410 INFO L225 Difference]: With dead ends: 702 [2020-08-18 21:14:56,410 INFO L226 Difference]: Without dead ends: 412 [2020-08-18 21:14:56,412 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 21:14:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-18 21:14:56,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-18 21:14:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-18 21:14:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 473 transitions. [2020-08-18 21:14:56,467 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 473 transitions. Word has length 454 [2020-08-18 21:14:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:56,467 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 473 transitions. [2020-08-18 21:14:56,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:14:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 473 transitions. [2020-08-18 21:14:56,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-08-18 21:14:56,472 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:56,473 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 21:14:56,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-18 21:14:56,473 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:56,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:56,473 INFO L82 PathProgramCache]: Analyzing trace with hash 389126169, now seen corresponding path program 25 times [2020-08-18 21:14:56,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:56,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080163403] [2020-08-18 21:14:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:14:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:14:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:14:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:14:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:14:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:14:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-18 21:14:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 21:14:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-18 21:14:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-18 21:14:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-18 21:14:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-18 21:14:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-18 21:14:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:14:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:14:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-18 21:14:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-18 21:14:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-18 21:14:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:14:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:14:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:14:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-18 21:14:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-18 21:14:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-18 21:14:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:14:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:14:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:14:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-18 21:14:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-18 21:14:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-18 21:14:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-18 21:14:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:14:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:14:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:14:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:56,969 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 21:14:56,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080163403] [2020-08-18 21:14:56,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:56,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 21:14:56,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296708427] [2020-08-18 21:14:56,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:14:56,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:56,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:14:56,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:14:56,972 INFO L87 Difference]: Start difference. First operand 412 states and 473 transitions. Second operand 12 states. [2020-08-18 21:14:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:57,457 INFO L93 Difference]: Finished difference Result 611 states and 701 transitions. [2020-08-18 21:14:57,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 21:14:57,457 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 499 [2020-08-18 21:14:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:57,460 INFO L225 Difference]: With dead ends: 611 [2020-08-18 21:14:57,461 INFO L226 Difference]: Without dead ends: 412 [2020-08-18 21:14:57,462 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 21:14:57,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-18 21:14:57,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-18 21:14:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-18 21:14:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 471 transitions. [2020-08-18 21:14:57,529 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 471 transitions. Word has length 499 [2020-08-18 21:14:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:57,530 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 471 transitions. [2020-08-18 21:14:57,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:14:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 471 transitions. [2020-08-18 21:14:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-08-18 21:14:57,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:57,537 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 21:14:57,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-18 21:14:57,537 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:57,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:57,538 INFO L82 PathProgramCache]: Analyzing trace with hash 206006162, now seen corresponding path program 26 times [2020-08-18 21:14:57,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:57,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312048514] [2020-08-18 21:14:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:14:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:14:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:14:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:14:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:14:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:14:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:14:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:14:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:14:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:14:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:14:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:14:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-18 21:14:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:14:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:14:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:14:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-18 21:14:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-18 21:14:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:14:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:14:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:14:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-18 21:14:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-18 21:14:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-18 21:14:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:14:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:14:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:14:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-18 21:14:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-18 21:14:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-18 21:14:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-18 21:14:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:14:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:14:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-08-18 21:14:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-08-18 21:14:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-18 21:14:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-18 21:14:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-18 21:14:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 21:14:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:57,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:14:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:58,232 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 21:14:58,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312048514] [2020-08-18 21:14:58,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:14:58,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 21:14:58,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787540165] [2020-08-18 21:14:58,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 21:14:58,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:58,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 21:14:58,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:14:58,237 INFO L87 Difference]: Start difference. First operand 412 states and 471 transitions. Second operand 19 states. [2020-08-18 21:14:59,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:14:59,515 INFO L93 Difference]: Finished difference Result 617 states and 706 transitions. [2020-08-18 21:14:59,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-18 21:14:59,516 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 544 [2020-08-18 21:14:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:14:59,519 INFO L225 Difference]: With dead ends: 617 [2020-08-18 21:14:59,519 INFO L226 Difference]: Without dead ends: 416 [2020-08-18 21:14:59,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=965, Invalid=1897, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 21:14:59,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-08-18 21:14:59,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2020-08-18 21:14:59,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-18 21:14:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 474 transitions. [2020-08-18 21:14:59,585 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 474 transitions. Word has length 544 [2020-08-18 21:14:59,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:14:59,586 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 474 transitions. [2020-08-18 21:14:59,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 21:14:59,586 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 474 transitions. [2020-08-18 21:14:59,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-08-18 21:14:59,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:59,591 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 21:14:59,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-18 21:14:59,591 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:59,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:59,591 INFO L82 PathProgramCache]: Analyzing trace with hash 22704138, now seen corresponding path program 27 times [2020-08-18 21:14:59,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:59,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033299999] [2020-08-18 21:14:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:14:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:14:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:14:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:14:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:14:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:14:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:14:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:14:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:14:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:14:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:14:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:14:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:14:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:14:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:14:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:14:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:14:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:14:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:14:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:14:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:14:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:14:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:14:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:14:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:14:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:14:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:14:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:14:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:14:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:14:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:14:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:14:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:14:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:14:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:14:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:14:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:14:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:14:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:14:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:14:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:14:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:14:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:14:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:14:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-18 21:14:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:14:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:14:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:14:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:14:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-18 21:14:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-18 21:14:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:14:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:14:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:14:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:14:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-18 21:14:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-18 21:14:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-18 21:14:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:14:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:14:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:14:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:14:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-18 21:14:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-18 21:14:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-18 21:14:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 21:14:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:14:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:14:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:14:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:00,163 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 21:15:00,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033299999] [2020-08-18 21:15:00,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:15:00,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 21:15:00,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988311870] [2020-08-18 21:15:00,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 21:15:00,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:00,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 21:15:00,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:15:00,166 INFO L87 Difference]: Start difference. First operand 416 states and 474 transitions. Second operand 15 states. [2020-08-18 21:15:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:00,847 INFO L93 Difference]: Finished difference Result 618 states and 703 transitions. [2020-08-18 21:15:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:15:00,848 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 558 [2020-08-18 21:15:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:00,851 INFO L225 Difference]: With dead ends: 618 [2020-08-18 21:15:00,851 INFO L226 Difference]: Without dead ends: 417 [2020-08-18 21:15:00,853 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 21:15:00,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-18 21:15:00,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-18 21:15:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-18 21:15:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 473 transitions. [2020-08-18 21:15:00,904 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 473 transitions. Word has length 558 [2020-08-18 21:15:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:00,905 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 473 transitions. [2020-08-18 21:15:00,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 21:15:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 473 transitions. [2020-08-18 21:15:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-08-18 21:15:00,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:00,910 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 21:15:00,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-18 21:15:00,911 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:00,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:00,911 INFO L82 PathProgramCache]: Analyzing trace with hash -289471297, now seen corresponding path program 28 times [2020-08-18 21:15:00,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:00,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212261726] [2020-08-18 21:15:00,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:15:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:15:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:15:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:15:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:15:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:15:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:15:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:15:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:15:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:15:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:15:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:15:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:15:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:15:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:15:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:15:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:15:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:15:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:15:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:15:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:15:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:15:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:15:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:15:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:15:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:15:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:15:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:15:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:15:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:15:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:15:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:15:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:15:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:15:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:15:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:15:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:15:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:15:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:15:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:15:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:15:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:15:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:15:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:15:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 21:15:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:15:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:15:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:15:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:15:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 21:15:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-18 21:15:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:15:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:15:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:15:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:15:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 21:15:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-18 21:15:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-18 21:15:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:15:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:15:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:15:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:15:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 21:15:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-18 21:15:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-18 21:15:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 21:15:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:15:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:15:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:15:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 21:15:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:01,726 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 21:15:01,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212261726] [2020-08-18 21:15:01,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:15:01,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 21:15:01,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854720684] [2020-08-18 21:15:01,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 21:15:01,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:01,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 21:15:01,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:15:01,729 INFO L87 Difference]: Start difference. First operand 416 states and 473 transitions. Second operand 17 states. [2020-08-18 21:15:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:02,609 INFO L93 Difference]: Finished difference Result 618 states and 701 transitions. [2020-08-18 21:15:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 21:15:02,610 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 565 [2020-08-18 21:15:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:02,615 INFO L225 Difference]: With dead ends: 618 [2020-08-18 21:15:02,615 INFO L226 Difference]: Without dead ends: 417 [2020-08-18 21:15:02,616 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 21:15:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-18 21:15:02,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-18 21:15:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-18 21:15:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 472 transitions. [2020-08-18 21:15:02,673 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 472 transitions. Word has length 565 [2020-08-18 21:15:02,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:02,674 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 472 transitions. [2020-08-18 21:15:02,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 21:15:02,674 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 472 transitions. [2020-08-18 21:15:02,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-18 21:15:02,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:02,680 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 21:15:02,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-18 21:15:02,680 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:02,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:02,681 INFO L82 PathProgramCache]: Analyzing trace with hash 126799646, now seen corresponding path program 29 times [2020-08-18 21:15:02,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:02,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380657278] [2020-08-18 21:15:02,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:15:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:15:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:15:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:15:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:15:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:15:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:15:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:15:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:15:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:15:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:15:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:15:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:15:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:15:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:15:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:15:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:15:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:15:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:15:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:15:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:15:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:15:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:15:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:15:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:15:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:15:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:15:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:15:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:15:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:15:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:15:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:15:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:15:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:15:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:15:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:15:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:15:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:15:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:15:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:15:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:15:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:15:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:15:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:15:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 21:15:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:15:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:15:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:15:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:15:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 21:15:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 21:15:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:15:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:15:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:15:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:15:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 21:15:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 21:15:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-18 21:15:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:15:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:15:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:15:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:15:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 21:15:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 21:15:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-18 21:15:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 21:15:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:15:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:15:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:15:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 21:15:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 21:15:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:03,343 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 21:15:03,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380657278] [2020-08-18 21:15:03,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:15:03,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 21:15:03,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441902257] [2020-08-18 21:15:03,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 21:15:03,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:03,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 21:15:03,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:15:03,345 INFO L87 Difference]: Start difference. First operand 416 states and 472 transitions. Second operand 19 states. [2020-08-18 21:15:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:04,494 INFO L93 Difference]: Finished difference Result 620 states and 702 transitions. [2020-08-18 21:15:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-18 21:15:04,494 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 572 [2020-08-18 21:15:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:04,498 INFO L225 Difference]: With dead ends: 620 [2020-08-18 21:15:04,498 INFO L226 Difference]: Without dead ends: 419 [2020-08-18 21:15:04,500 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 21:15:04,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-08-18 21:15:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 418. [2020-08-18 21:15:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-18 21:15:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 474 transitions. [2020-08-18 21:15:04,557 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 474 transitions. Word has length 572 [2020-08-18 21:15:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:04,558 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 474 transitions. [2020-08-18 21:15:04,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 21:15:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 474 transitions. [2020-08-18 21:15:04,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-08-18 21:15:04,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:04,565 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 21:15:04,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-18 21:15:04,566 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:04,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:04,566 INFO L82 PathProgramCache]: Analyzing trace with hash -847775853, now seen corresponding path program 30 times [2020-08-18 21:15:04,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:04,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599036805] [2020-08-18 21:15:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:15:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:15:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:15:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:15:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:15:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:15:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:15:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:15:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:15:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:15:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:15:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:15:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:15:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:15:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:15:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:15:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:15:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:15:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:15:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:15:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:15:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:15:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:15:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:15:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:15:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:15:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:15:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:15:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:15:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:15:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:15:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:04,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:15:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:15:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:15:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:15:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:15:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:15:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:15:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:15:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:15:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:15:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:15:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:15:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:15:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 21:15:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:15:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:15:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:15:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:15:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 21:15:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 21:15:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:15:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:15:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:15:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:15:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 21:15:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 21:15:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 21:15:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:15:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:15:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:15:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:15:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 21:15:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 21:15:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 21:15:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 21:15:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:15:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:15:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:15:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 21:15:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 21:15:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 21:15:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:05,377 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 21:15:05,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599036805] [2020-08-18 21:15:05,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:15:05,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-18 21:15:05,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702872124] [2020-08-18 21:15:05,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-18 21:15:05,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:05,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-18 21:15:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-08-18 21:15:05,380 INFO L87 Difference]: Start difference. First operand 418 states and 474 transitions. Second operand 20 states. [2020-08-18 21:15:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:06,218 INFO L93 Difference]: Finished difference Result 504 states and 565 transitions. [2020-08-18 21:15:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:15:06,218 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 579 [2020-08-18 21:15:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:06,222 INFO L225 Difference]: With dead ends: 504 [2020-08-18 21:15:06,222 INFO L226 Difference]: Without dead ends: 502 [2020-08-18 21:15:06,223 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 21:15:06,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-18 21:15:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 478. [2020-08-18 21:15:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-18 21:15:06,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 538 transitions. [2020-08-18 21:15:06,279 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 538 transitions. Word has length 579 [2020-08-18 21:15:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:06,280 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 538 transitions. [2020-08-18 21:15:06,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-18 21:15:06,280 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 538 transitions. [2020-08-18 21:15:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-08-18 21:15:06,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:06,285 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 21:15:06,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-18 21:15:06,285 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:06,286 INFO L82 PathProgramCache]: Analyzing trace with hash 267632406, now seen corresponding path program 31 times [2020-08-18 21:15:06,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:06,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565195527] [2020-08-18 21:15:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:15:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:15:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:15:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:15:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:15:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:15:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:15:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:15:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:15:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:15:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:15:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:15:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:15:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:15:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:15:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:15:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:15:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:15:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:15:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:15:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:15:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:15:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:15:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:15:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:15:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:15:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:15:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:15:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:15:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:15:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:15:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:15:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:15:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:15:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:15:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:15:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:15:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:15:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:15:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:15:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:15:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:15:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:15:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:15:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 21:15:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:15:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:15:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:15:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:15:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 21:15:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 21:15:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:15:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:15:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:15:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:15:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 21:15:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 21:15:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 21:15:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:15:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:15:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:15:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:15:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 21:15:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 21:15:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 21:15:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-18 21:15:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:15:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:15:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:15:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 21:15:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 21:15:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 21:15:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 21:15:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:07,016 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 21:15:07,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565195527] [2020-08-18 21:15:07,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:15:07,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-18 21:15:07,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036272039] [2020-08-18 21:15:07,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-18 21:15:07,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:07,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-18 21:15:07,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-08-18 21:15:07,018 INFO L87 Difference]: Start difference. First operand 478 states and 538 transitions. Second operand 21 states. [2020-08-18 21:15:08,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:08,618 INFO L93 Difference]: Finished difference Result 714 states and 810 transitions. [2020-08-18 21:15:08,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 21:15:08,619 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 586 [2020-08-18 21:15:08,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:08,622 INFO L225 Difference]: With dead ends: 714 [2020-08-18 21:15:08,622 INFO L226 Difference]: Without dead ends: 479 [2020-08-18 21:15:08,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1311, Invalid=2595, Unknown=0, NotChecked=0, Total=3906 [2020-08-18 21:15:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-08-18 21:15:08,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 478. [2020-08-18 21:15:08,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-18 21:15:08,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 536 transitions. [2020-08-18 21:15:08,680 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 536 transitions. Word has length 586 [2020-08-18 21:15:08,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:08,681 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 536 transitions. [2020-08-18 21:15:08,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-18 21:15:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 536 transitions. [2020-08-18 21:15:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2020-08-18 21:15:08,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:08,686 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 21:15:08,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-18 21:15:08,686 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:08,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:08,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1197037185, now seen corresponding path program 32 times [2020-08-18 21:15:08,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:08,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820668428] [2020-08-18 21:15:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:15:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:15:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:15:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:15:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:15:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:15:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:15:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:15:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:15:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:15:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:15:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:15:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:15:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:15:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:15:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:15:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:15:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:15:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:15:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:15:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:15:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:15:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:15:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:15:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:15:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:15:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:15:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:15:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:15:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:15:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:15:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:15:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:15:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:15:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:15:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:15:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:15:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:15:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:15:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:15:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:15:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:15:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:15:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:15:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 21:15:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:15:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:15:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:15:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:15:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 21:15:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 21:15:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:15:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:15:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:15:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:15:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 21:15:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 21:15:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 21:15:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:15:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:15:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:15:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:15:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 21:15:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 21:15:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 21:15:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 21:15:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:15:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:15:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:15:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 21:15:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 21:15:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 21:15:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 21:15:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 21:15:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:09,469 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 21:15:09,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820668428] [2020-08-18 21:15:09,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:15:09,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-18 21:15:09,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560376037] [2020-08-18 21:15:09,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-18 21:15:09,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:09,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-18 21:15:09,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-08-18 21:15:09,472 INFO L87 Difference]: Start difference. First operand 478 states and 536 transitions. Second operand 21 states. [2020-08-18 21:15:10,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:10,255 INFO L93 Difference]: Finished difference Result 537 states and 603 transitions. [2020-08-18 21:15:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 21:15:10,256 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 593 [2020-08-18 21:15:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:10,259 INFO L225 Difference]: With dead ends: 537 [2020-08-18 21:15:10,260 INFO L226 Difference]: Without dead ends: 535 [2020-08-18 21:15:10,261 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 21:15:10,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-08-18 21:15:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 505. [2020-08-18 21:15:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-08-18 21:15:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 570 transitions. [2020-08-18 21:15:10,327 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 570 transitions. Word has length 593 [2020-08-18 21:15:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:10,328 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 570 transitions. [2020-08-18 21:15:10,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-18 21:15:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 570 transitions. [2020-08-18 21:15:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-08-18 21:15:10,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:10,334 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 21:15:10,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-18 21:15:10,334 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1218530218, now seen corresponding path program 33 times [2020-08-18 21:15:10,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:10,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191426729] [2020-08-18 21:15:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:15:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:15:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:15:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:15:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:15:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:15:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:15:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:15:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:15:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:15:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:15:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:15:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:15:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:15:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:15:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:15:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:15:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:15:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:15:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:15:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:15:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:15:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:15:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:15:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:15:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:15:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:15:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:15:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:15:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:15:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:15:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:15:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:15:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:15:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:15:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:15:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:15:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:15:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:15:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:15:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:15:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:15:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:15:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:15:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 21:15:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:15:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:15:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:15:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:15:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 21:15:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 21:15:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:15:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:15:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:15:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:15:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 21:15:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 21:15:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 21:15:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:15:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:15:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:15:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:15:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 21:15:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 21:15:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 21:15:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 21:15:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:15:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:15:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:15:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 21:15:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 21:15:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 21:15:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 21:15:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 21:15:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-18 21:15:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:11,177 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 21:15:11,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191426729] [2020-08-18 21:15:11,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:15:11,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-18 21:15:11,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345787561] [2020-08-18 21:15:11,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-18 21:15:11,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:11,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-18 21:15:11,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-08-18 21:15:11,179 INFO L87 Difference]: Start difference. First operand 505 states and 570 transitions. Second operand 24 states. [2020-08-18 21:15:14,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:14,130 INFO L93 Difference]: Finished difference Result 898 states and 1049 transitions. [2020-08-18 21:15:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-08-18 21:15:14,131 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 600 [2020-08-18 21:15:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:14,134 INFO L225 Difference]: With dead ends: 898 [2020-08-18 21:15:14,134 INFO L226 Difference]: Without dead ends: 631 [2020-08-18 21:15:14,139 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 21:15:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-18 21:15:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-18 21:15:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-18 21:15:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 730 transitions. [2020-08-18 21:15:14,238 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 730 transitions. Word has length 600 [2020-08-18 21:15:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:14,239 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 730 transitions. [2020-08-18 21:15:14,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-18 21:15:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 730 transitions. [2020-08-18 21:15:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-08-18 21:15:14,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:14,248 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 21:15:14,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-18 21:15:14,248 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:14,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:14,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1731219376, now seen corresponding path program 34 times [2020-08-18 21:15:14,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:14,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772628953] [2020-08-18 21:15:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:15:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:15:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:15:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:15:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:15:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:15:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:15:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:15:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:15:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:15:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:15:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:15:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:15:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:15:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:15:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:15:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:15:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:15:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:15:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:15:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:15:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:15:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:15:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:15:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:15:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:15:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:15:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:15:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:15:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:15:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:15:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:15:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:15:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:15:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:15:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:15:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:15:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:15:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:15:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:15:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:15:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:15:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:15:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:15:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 21:15:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:15:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:15:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:15:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:15:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 21:15:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 21:15:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:15:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:15:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:15:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:15:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 21:15:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 21:15:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 21:15:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:15:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:15:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:15:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:15:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 21:15:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 21:15:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 21:15:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 21:15:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:15:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:15:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:15:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 21:15:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 21:15:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 21:15:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 21:15:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 21:15:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-08-18 21:15:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-18 21:15:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-18 21:15:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-18 21:15:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-18 21:15:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-08-18 21:15:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-18 21:15:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-18 21:15:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-18 21:15:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-18 21:15:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-18 21:15:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-08-18 21:15:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-18 21:15:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-18 21:15:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-18 21:15:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-18 21:15:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-18 21:15:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-18 21:15:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-08-18 21:15:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-18 21:15:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-18 21:15:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-18 21:15:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-18 21:15:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-18 21:15:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-18 21:15:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-18 21:15:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-08-18 21:15:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-18 21:15:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-18 21:15:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-18 21:15:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-18 21:15:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-18 21:15:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-18 21:15:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-18 21:15:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:14,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-18 21:15:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:15,384 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 21:15:15,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772628953] [2020-08-18 21:15:15,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:15:15,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-18 21:15:15,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116674911] [2020-08-18 21:15:15,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-18 21:15:15,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:15,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-18 21:15:15,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-08-18 21:15:15,388 INFO L87 Difference]: Start difference. First operand 628 states and 730 transitions. Second operand 23 states. [2020-08-18 21:15:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:17,484 INFO L93 Difference]: Finished difference Result 923 states and 1077 transitions. [2020-08-18 21:15:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-18 21:15:17,484 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 856 [2020-08-18 21:15:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:17,489 INFO L225 Difference]: With dead ends: 923 [2020-08-18 21:15:17,489 INFO L226 Difference]: Without dead ends: 631 [2020-08-18 21:15:17,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1873, Invalid=3677, Unknown=0, NotChecked=0, Total=5550 [2020-08-18 21:15:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-18 21:15:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-18 21:15:17,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-18 21:15:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 728 transitions. [2020-08-18 21:15:17,577 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 728 transitions. Word has length 856 [2020-08-18 21:15:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:17,578 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 728 transitions. [2020-08-18 21:15:17,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-18 21:15:17,579 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 728 transitions. [2020-08-18 21:15:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-08-18 21:15:17,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:17,588 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 21:15:17,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-08-18 21:15:17,588 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:17,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:17,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2044024613, now seen corresponding path program 35 times [2020-08-18 21:15:17,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:17,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165178445] [2020-08-18 21:15:17,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:15:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:15:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:15:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:15:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:15:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:15:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:15:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:15:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:15:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:15:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:15:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:15:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:15:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:15:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:15:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:15:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:15:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:15:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:15:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:15:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:15:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:15:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:15:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:15:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:15:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:15:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:15:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:15:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:15:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:15:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:15:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:15:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:15:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:15:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:15:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:15:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:15:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:15:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:15:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:15:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:15:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:15:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:15:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:15:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 21:15:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:15:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:15:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:15:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:15:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 21:15:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 21:15:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:15:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:15:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:15:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:15:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 21:15:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 21:15:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 21:15:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:15:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:15:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:15:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:15:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 21:15:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 21:15:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 21:15:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 21:15:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:15:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:15:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:15:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 21:15:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 21:15:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 21:15:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 21:15:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 21:15:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-18 21:15:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-18 21:15:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-18 21:15:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-18 21:15:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-18 21:15:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-18 21:15:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-18 21:15:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-18 21:15:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-18 21:15:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-18 21:15:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-18 21:15:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-18 21:15:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-18 21:15:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-18 21:15:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-18 21:15:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-18 21:15:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-18 21:15:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-18 21:15:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-18 21:15:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-18 21:15:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-18 21:15:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-18 21:15:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-18 21:15:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-18 21:15:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-18 21:15:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-18 21:15:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-18 21:15:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-18 21:15:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-18 21:15:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-18 21:15:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-18 21:15:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-18 21:15:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-18 21:15:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-18 21:15:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-18 21:15:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-18 21:15:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:19,084 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 21:15:19,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165178445] [2020-08-18 21:15:19,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:15:19,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 21:15:19,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374534580] [2020-08-18 21:15:19,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 21:15:19,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:19,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 21:15:19,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:15:19,087 INFO L87 Difference]: Start difference. First operand 628 states and 728 transitions. Second operand 17 states. [2020-08-18 21:15:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:19,833 INFO L93 Difference]: Finished difference Result 1033 states and 1215 transitions. [2020-08-18 21:15:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 21:15:19,834 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 863 [2020-08-18 21:15:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:19,837 INFO L225 Difference]: With dead ends: 1033 [2020-08-18 21:15:19,837 INFO L226 Difference]: Without dead ends: 629 [2020-08-18 21:15:19,839 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 21:15:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-18 21:15:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-18 21:15:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-18 21:15:19,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 726 transitions. [2020-08-18 21:15:19,922 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 726 transitions. Word has length 863 [2020-08-18 21:15:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:19,923 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 726 transitions. [2020-08-18 21:15:19,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 21:15:19,923 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 726 transitions. [2020-08-18 21:15:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2020-08-18 21:15:19,932 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:19,932 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 21:15:19,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-08-18 21:15:19,933 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:19,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:19,933 INFO L82 PathProgramCache]: Analyzing trace with hash -2034609596, now seen corresponding path program 36 times [2020-08-18 21:15:19,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:19,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604412936] [2020-08-18 21:15:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:15:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:15:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:15:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:15:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:15:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:15:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:15:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:15:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:15:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:15:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:15:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:15:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:15:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:15:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:15:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:15:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:15:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:15:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:15:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:15:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:15:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:15:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:15:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:15:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:15:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:15:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:15:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:15:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:15:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:15:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:15:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:15:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:15:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:15:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:15:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:15:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:15:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:15:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:15:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:15:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:15:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:15:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:15:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:15:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 21:15:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:15:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:15:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:15:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:15:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 21:15:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 21:15:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:15:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:15:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:15:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:15:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 21:15:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 21:15:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 21:15:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:15:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:15:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:15:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:15:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 21:15:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 21:15:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 21:15:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 21:15:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:15:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:15:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:15:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 21:15:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 21:15:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 21:15:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 21:15:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 21:15:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-18 21:15:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-18 21:15:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-18 21:15:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-18 21:15:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-18 21:15:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-18 21:15:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-18 21:15:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-18 21:15:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-18 21:15:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-18 21:15:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-18 21:15:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-18 21:15:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-18 21:15:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-18 21:15:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-18 21:15:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-18 21:15:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-18 21:15:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-18 21:15:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-18 21:15:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-18 21:15:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-18 21:15:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-18 21:15:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-18 21:15:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-18 21:15:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-18 21:15:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-18 21:15:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-18 21:15:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-18 21:15:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-18 21:15:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-18 21:15:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-18 21:15:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-18 21:15:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-18 21:15:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-18 21:15:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-18 21:15:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-18 21:15:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:20,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-18 21:15:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:21,039 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 21:15:21,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604412936] [2020-08-18 21:15:21,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:15:21,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 21:15:21,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502881721] [2020-08-18 21:15:21,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 21:15:21,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:21,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 21:15:21,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:15:21,041 INFO L87 Difference]: Start difference. First operand 628 states and 726 transitions. Second operand 19 states. [2020-08-18 21:15:22,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:22,117 INFO L93 Difference]: Finished difference Result 891 states and 1028 transitions. [2020-08-18 21:15:22,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-18 21:15:22,118 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 870 [2020-08-18 21:15:22,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:22,122 INFO L225 Difference]: With dead ends: 891 [2020-08-18 21:15:22,122 INFO L226 Difference]: Without dead ends: 629 [2020-08-18 21:15:22,123 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 21:15:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-18 21:15:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-18 21:15:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-18 21:15:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 725 transitions. [2020-08-18 21:15:22,240 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 725 transitions. Word has length 870 [2020-08-18 21:15:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:22,241 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 725 transitions. [2020-08-18 21:15:22,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 21:15:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 725 transitions. [2020-08-18 21:15:22,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2020-08-18 21:15:22,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:22,267 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 21:15:22,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-08-18 21:15:22,267 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:22,268 INFO L82 PathProgramCache]: Analyzing trace with hash -206805743, now seen corresponding path program 37 times [2020-08-18 21:15:22,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:22,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869365302] [2020-08-18 21:15:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 21:15:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:15:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:15:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:15:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 21:15:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:15:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:15:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:15:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:15:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:15:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:15:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 21:15:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:15:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 21:15:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 21:15:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 21:15:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 21:15:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 21:15:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:15:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-18 21:15:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:15:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 21:15:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 21:15:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 21:15:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-18 21:15:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 21:15:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 21:15:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:15:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-18 21:15:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:15:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 21:15:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 21:15:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 21:15:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-18 21:15:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-18 21:15:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-18 21:15:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 21:15:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-18 21:15:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-18 21:15:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-18 21:15:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-18 21:15:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-18 21:15:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-18 21:15:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-18 21:15:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-18 21:15:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-18 21:15:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-18 21:15:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-18 21:15:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-18 21:15:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-18 21:15:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-18 21:15:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-18 21:15:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-18 21:15:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-18 21:15:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-18 21:15:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-18 21:15:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-18 21:15:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-18 21:15:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-18 21:15:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-18 21:15:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-18 21:15:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-18 21:15:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-18 21:15:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-18 21:15:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-18 21:15:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-18 21:15:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-18 21:15:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-18 21:15:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-18 21:15:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-18 21:15:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-18 21:15:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-18 21:15:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-18 21:15:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-18 21:15:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-18 21:15:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-18 21:15:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-18 21:15:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-18 21:15:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-18 21:15:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-18 21:15:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-18 21:15:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-18 21:15:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-18 21:15:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-18 21:15:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-18 21:15:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-18 21:15:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-18 21:15:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-08-18 21:15:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-18 21:15:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-18 21:15:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-18 21:15:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-18 21:15:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-18 21:15:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-18 21:15:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2020-08-18 21:15:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-18 21:15:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-18 21:15:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-18 21:15:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-18 21:15:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-18 21:15:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-18 21:15:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-18 21:15:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-08-18 21:15:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-18 21:15:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-18 21:15:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-18 21:15:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-18 21:15:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-18 21:15:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-18 21:15:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-18 21:15:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-18 21:15:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2020-08-18 21:15:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat