/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:15:12,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:15:12,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:15:12,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:15:12,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:15:12,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:15:12,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:15:12,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:15:12,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:15:12,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:15:12,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:15:12,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:15:12,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:15:12,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:15:12,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:15:12,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:15:12,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:15:12,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:15:12,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:15:12,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:15:12,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:15:12,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:15:12,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:15:12,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:15:12,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 14:15:12,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:15:12,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:15:12,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:15:12,527 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 [2020-08-21 14:15:12,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:15:12,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:15:12,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:15:12,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:15:12,573 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:15:12,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:15:12,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:15:12,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:15:12,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:15:12,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:15:12,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:15:12,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:15:12,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:15:12,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:15:12,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:15:12,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:15:12,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:15:12,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:15:12,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:15:12,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:15:12,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:15:12,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:15:12,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:15:12,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:15:12,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:15:12,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:15:12,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:15:12,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:15:12,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:15:12,579 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 -> log-additional-information=true; [2020-08-21 14:15:12,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:15:12,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:15:12,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:15:12,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:15:12,896 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:15:12,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-21 14:15:12,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84522243d/7a717897f45e452ab01e3bb17676161b/FLAG84f133c7e [2020-08-21 14:15:13,445 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:15:13,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-21 14:15:13,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84522243d/7a717897f45e452ab01e3bb17676161b/FLAG84f133c7e [2020-08-21 14:15:13,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84522243d/7a717897f45e452ab01e3bb17676161b [2020-08-21 14:15:13,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:15:13,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:15:13,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:15:13,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:15:13,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:15:13,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:15:13" (1/1) ... [2020-08-21 14:15:13,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae2094d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:13, skipping insertion in model container [2020-08-21 14:15:13,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:15:13" (1/1) ... [2020-08-21 14:15:13,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:15:13,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:15:14,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:15:14,110 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:15:14,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:15:14,141 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:15:14,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:14 WrapperNode [2020-08-21 14:15:14,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:15:14,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:15:14,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:15:14,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:15:14,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:14" (1/1) ... [2020-08-21 14:15:14,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:14" (1/1) ... [2020-08-21 14:15:14,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:14" (1/1) ... [2020-08-21 14:15:14,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:14" (1/1) ... [2020-08-21 14:15:14,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:14" (1/1) ... [2020-08-21 14:15:14,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:14" (1/1) ... [2020-08-21 14:15:14,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:14" (1/1) ... [2020-08-21 14:15:14,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:15:14,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:15:14,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:15:14,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:15:14,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:14" (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 [2020-08-21 14:15:14,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:15:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:15:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 14:15:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 14:15:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:15:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:15:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 14:15:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 14:15:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 14:15:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:15:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:15:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:15:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:15:14,570 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:15:14,570 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 14:15:14,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:15:14 BoogieIcfgContainer [2020-08-21 14:15:14,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:15:14,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:15:14,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:15:14,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:15:14,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:15:13" (1/3) ... [2020-08-21 14:15:14,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf674de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:15:14, skipping insertion in model container [2020-08-21 14:15:14,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:15:14" (2/3) ... [2020-08-21 14:15:14,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf674de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:15:14, skipping insertion in model container [2020-08-21 14:15:14,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:15:14" (3/3) ... [2020-08-21 14:15:14,589 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-08-21 14:15:14,604 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:15:14,612 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:15:14,631 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:15:14,658 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:15:14,659 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:15:14,659 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:15:14,659 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:15:14,659 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:15:14,659 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:15:14,660 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:15:14,660 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:15:14,680 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-21 14:15:14,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 14:15:14,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:14,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:15:14,698 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:14,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1671060194, now seen corresponding path program 1 times [2020-08-21 14:15:14,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:14,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619035326] [2020-08-21 14:15:14,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:15,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:15:15,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619035326] [2020-08-21 14:15:15,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:15:15,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:15:15,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196763156] [2020-08-21 14:15:15,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:15:15,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:15,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:15:15,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:15:15,045 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 8 states. [2020-08-21 14:15:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:15,426 INFO L93 Difference]: Finished difference Result 68 states and 95 transitions. [2020-08-21 14:15:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 14:15:15,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-21 14:15:15,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:15,438 INFO L225 Difference]: With dead ends: 68 [2020-08-21 14:15:15,438 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 14:15:15,442 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 [2020-08-21 14:15:15,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 14:15:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-08-21 14:15:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 14:15:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-21 14:15:15,492 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2020-08-21 14:15:15,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:15,493 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-21 14:15:15,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:15:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-21 14:15:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 14:15:15,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:15,495 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] [2020-08-21 14:15:15,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:15:15,496 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:15,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:15,497 INFO L82 PathProgramCache]: Analyzing trace with hash -764881689, now seen corresponding path program 1 times [2020-08-21 14:15:15,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:15,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030634258] [2020-08-21 14:15:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:15,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:15,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:15:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 14:15:15,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030634258] [2020-08-21 14:15:15,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:15:15,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:15:15,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809271446] [2020-08-21 14:15:15,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:15:15,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:15,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:15:15,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:15:15,579 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2020-08-21 14:15:15,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:15,745 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-08-21 14:15:15,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 14:15:15,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-21 14:15:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:15,749 INFO L225 Difference]: With dead ends: 57 [2020-08-21 14:15:15,750 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 14:15:15,751 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 [2020-08-21 14:15:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 14:15:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-21 14:15:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 14:15:15,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-21 14:15:15,761 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2020-08-21 14:15:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:15,762 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-21 14:15:15,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:15:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-21 14:15:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 14:15:15,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:15,764 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] [2020-08-21 14:15:15,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:15:15,764 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:15,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1134636734, now seen corresponding path program 1 times [2020-08-21 14:15:15,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:15,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796936215] [2020-08-21 14:15:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:15,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:15,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:15:15,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796936215] [2020-08-21 14:15:15,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:15,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 14:15:15,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425581425] [2020-08-21 14:15:15,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:15:15,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:15:15,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:15:15,874 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-08-21 14:15:16,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:16,101 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-08-21 14:15:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:15:16,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-08-21 14:15:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:16,103 INFO L225 Difference]: With dead ends: 70 [2020-08-21 14:15:16,103 INFO L226 Difference]: Without dead ends: 51 [2020-08-21 14:15:16,104 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 [2020-08-21 14:15:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-21 14:15:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2020-08-21 14:15:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 14:15:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-08-21 14:15:16,121 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 28 [2020-08-21 14:15:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:16,121 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-08-21 14:15:16,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:15:16,122 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-08-21 14:15:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-21 14:15:16,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:16,124 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] [2020-08-21 14:15:16,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:15:16,125 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:16,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:16,126 INFO L82 PathProgramCache]: Analyzing trace with hash 83931911, now seen corresponding path program 2 times [2020-08-21 14:15:16,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:16,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409182158] [2020-08-21 14:15:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 14:15:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 14:15:16,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409182158] [2020-08-21 14:15:16,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:16,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 14:15:16,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228190240] [2020-08-21 14:15:16,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:15:16,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:16,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:15:16,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:15:16,189 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-08-21 14:15:16,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:16,294 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-08-21 14:15:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 14:15:16,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-08-21 14:15:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:16,296 INFO L225 Difference]: With dead ends: 63 [2020-08-21 14:15:16,296 INFO L226 Difference]: Without dead ends: 44 [2020-08-21 14:15:16,297 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 [2020-08-21 14:15:16,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-21 14:15:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-21 14:15:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 14:15:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-08-21 14:15:16,309 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-08-21 14:15:16,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:16,309 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-08-21 14:15:16,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:15:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-08-21 14:15:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-21 14:15:16,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:16,312 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] [2020-08-21 14:15:16,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:15:16,312 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:16,313 INFO L82 PathProgramCache]: Analyzing trace with hash 848296232, now seen corresponding path program 1 times [2020-08-21 14:15:16,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:16,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47683652] [2020-08-21 14:15:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:16,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 14:15:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 14:15:16,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47683652] [2020-08-21 14:15:16,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:15:16,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 14:15:16,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507669978] [2020-08-21 14:15:16,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 14:15:16,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:16,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 14:15:16,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:15:16,367 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2020-08-21 14:15:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:16,457 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-08-21 14:15:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:15:16,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-21 14:15:16,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:16,460 INFO L225 Difference]: With dead ends: 75 [2020-08-21 14:15:16,460 INFO L226 Difference]: Without dead ends: 42 [2020-08-21 14:15:16,461 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 [2020-08-21 14:15:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-21 14:15:16,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-21 14:15:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 14:15:16,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-21 14:15:16,472 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2020-08-21 14:15:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:16,473 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-21 14:15:16,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 14:15:16,473 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-21 14:15:16,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 14:15:16,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:16,475 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] [2020-08-21 14:15:16,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:15:16,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:16,476 INFO L82 PathProgramCache]: Analyzing trace with hash -670641491, now seen corresponding path program 2 times [2020-08-21 14:15:16,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:16,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77710846] [2020-08-21 14:15:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:16,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:16,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:16,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 14:15:16,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77710846] [2020-08-21 14:15:16,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:16,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 14:15:16,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513998980] [2020-08-21 14:15:16,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:15:16,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:16,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:15:16,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:15:16,669 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-08-21 14:15:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:16,934 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-08-21 14:15:16,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:15:16,934 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-08-21 14:15:16,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:16,936 INFO L225 Difference]: With dead ends: 60 [2020-08-21 14:15:16,936 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 14:15:16,937 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 [2020-08-21 14:15:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 14:15:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-08-21 14:15:16,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-21 14:15:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-08-21 14:15:16,949 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 41 [2020-08-21 14:15:16,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:16,949 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-08-21 14:15:16,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:15:16,950 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-08-21 14:15:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 14:15:16,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:16,952 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] [2020-08-21 14:15:16,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:15:16,952 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:16,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2015935239, now seen corresponding path program 3 times [2020-08-21 14:15:16,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:16,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726802256] [2020-08-21 14:15:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:15:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 14:15:17,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726802256] [2020-08-21 14:15:17,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:17,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 14:15:17,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070580278] [2020-08-21 14:15:17,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:15:17,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:17,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:15:17,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:15:17,073 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 10 states. [2020-08-21 14:15:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:17,287 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-08-21 14:15:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:15:17,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-08-21 14:15:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:17,291 INFO L225 Difference]: With dead ends: 74 [2020-08-21 14:15:17,291 INFO L226 Difference]: Without dead ends: 72 [2020-08-21 14:15:17,292 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 [2020-08-21 14:15:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-21 14:15:17,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-08-21 14:15:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-21 14:15:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-08-21 14:15:17,314 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 51 [2020-08-21 14:15:17,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:17,314 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-08-21 14:15:17,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:15:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-08-21 14:15:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 14:15:17,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:17,319 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] [2020-08-21 14:15:17,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:15:17,320 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:17,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:17,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1770393310, now seen corresponding path program 4 times [2020-08-21 14:15:17,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:17,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738762434] [2020-08-21 14:15:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:15:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-21 14:15:17,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738762434] [2020-08-21 14:15:17,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:17,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 14:15:17,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027348916] [2020-08-21 14:15:17,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:15:17,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:17,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:15:17,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:15:17,473 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 9 states. [2020-08-21 14:15:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:17,712 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-08-21 14:15:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:15:17,712 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-21 14:15:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:17,713 INFO L225 Difference]: With dead ends: 97 [2020-08-21 14:15:17,714 INFO L226 Difference]: Without dead ends: 61 [2020-08-21 14:15:17,714 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 [2020-08-21 14:15:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-21 14:15:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-21 14:15:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-21 14:15:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-08-21 14:15:17,725 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 58 [2020-08-21 14:15:17,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:17,725 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-08-21 14:15:17,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:15:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-08-21 14:15:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 14:15:17,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:17,727 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] [2020-08-21 14:15:17,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:15:17,727 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:17,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:17,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1336799475, now seen corresponding path program 5 times [2020-08-21 14:15:17,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:17,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938041859] [2020-08-21 14:15:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-08-21 14:15:17,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938041859] [2020-08-21 14:15:17,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:17,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:15:17,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137453628] [2020-08-21 14:15:17,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:15:17,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:17,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:15:17,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:15:17,858 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 12 states. [2020-08-21 14:15:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:18,171 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-08-21 14:15:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 14:15:18,171 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-08-21 14:15:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:18,173 INFO L225 Difference]: With dead ends: 90 [2020-08-21 14:15:18,173 INFO L226 Difference]: Without dead ends: 88 [2020-08-21 14:15:18,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2020-08-21 14:15:18,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-21 14:15:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2020-08-21 14:15:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-21 14:15:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-08-21 14:15:18,186 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 65 [2020-08-21 14:15:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:18,186 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-08-21 14:15:18,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:15:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-08-21 14:15:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-21 14:15:18,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:18,188 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] [2020-08-21 14:15:18,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:15:18,189 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:18,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:18,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1858831946, now seen corresponding path program 6 times [2020-08-21 14:15:18,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:18,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181934185] [2020-08-21 14:15:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-08-21 14:15:18,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181934185] [2020-08-21 14:15:18,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:18,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:15:18,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946290308] [2020-08-21 14:15:18,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:15:18,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:18,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:15:18,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:15:18,353 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 12 states. [2020-08-21 14:15:18,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:18,791 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2020-08-21 14:15:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 14:15:18,791 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-21 14:15:18,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:18,793 INFO L225 Difference]: With dead ends: 141 [2020-08-21 14:15:18,793 INFO L226 Difference]: Without dead ends: 96 [2020-08-21 14:15:18,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2020-08-21 14:15:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-21 14:15:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-08-21 14:15:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-21 14:15:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-08-21 14:15:18,826 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 72 [2020-08-21 14:15:18,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:18,828 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-08-21 14:15:18,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:15:18,828 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-08-21 14:15:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-21 14:15:18,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:18,836 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] [2020-08-21 14:15:18,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:15:18,837 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:18,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:18,840 INFO L82 PathProgramCache]: Analyzing trace with hash 179803111, now seen corresponding path program 7 times [2020-08-21 14:15:18,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:18,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354713516] [2020-08-21 14:15:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:18,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 14:15:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 14:15:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 14:15:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 162 proven. 49 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-08-21 14:15:19,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354713516] [2020-08-21 14:15:19,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:19,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 14:15:19,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116054996] [2020-08-21 14:15:19,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:15:19,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:19,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:15:19,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:15:19,034 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 11 states. [2020-08-21 14:15:19,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:19,385 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2020-08-21 14:15:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 14:15:19,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 109 [2020-08-21 14:15:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:19,387 INFO L225 Difference]: With dead ends: 155 [2020-08-21 14:15:19,388 INFO L226 Difference]: Without dead ends: 98 [2020-08-21 14:15:19,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2020-08-21 14:15:19,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-21 14:15:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-08-21 14:15:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-21 14:15:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-21 14:15:19,413 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 109 [2020-08-21 14:15:19,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:19,414 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-21 14:15:19,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:15:19,414 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-21 14:15:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-21 14:15:19,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:19,416 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] [2020-08-21 14:15:19,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:15:19,417 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:19,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:19,417 INFO L82 PathProgramCache]: Analyzing trace with hash -888781782, now seen corresponding path program 8 times [2020-08-21 14:15:19,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:19,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350176508] [2020-08-21 14:15:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 14:15:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 182 proven. 62 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-08-21 14:15:19,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350176508] [2020-08-21 14:15:19,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:19,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 14:15:19,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039964141] [2020-08-21 14:15:19,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:15:19,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:19,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:15:19,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:15:19,578 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 11 states. [2020-08-21 14:15:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:19,884 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2020-08-21 14:15:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 14:15:19,884 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-08-21 14:15:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:19,886 INFO L225 Difference]: With dead ends: 178 [2020-08-21 14:15:19,886 INFO L226 Difference]: Without dead ends: 99 [2020-08-21 14:15:19,887 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 [2020-08-21 14:15:19,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-21 14:15:19,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-08-21 14:15:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-21 14:15:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2020-08-21 14:15:19,904 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 116 [2020-08-21 14:15:19,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:19,904 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2020-08-21 14:15:19,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:15:19,905 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2020-08-21 14:15:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-21 14:15:19,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:19,906 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] [2020-08-21 14:15:19,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 14:15:19,906 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:19,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1465957677, now seen corresponding path program 9 times [2020-08-21 14:15:19,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:19,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282304154] [2020-08-21 14:15:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 70 proven. 217 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-08-21 14:15:20,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282304154] [2020-08-21 14:15:20,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:20,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 14:15:20,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437696354] [2020-08-21 14:15:20,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 14:15:20,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:20,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 14:15:20,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:15:20,131 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 14 states. [2020-08-21 14:15:20,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:20,536 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2020-08-21 14:15:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 14:15:20,537 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 123 [2020-08-21 14:15:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:20,538 INFO L225 Difference]: With dead ends: 136 [2020-08-21 14:15:20,538 INFO L226 Difference]: Without dead ends: 134 [2020-08-21 14:15:20,539 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 [2020-08-21 14:15:20,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-21 14:15:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2020-08-21 14:15:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 14:15:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-08-21 14:15:20,555 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 123 [2020-08-21 14:15:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:20,555 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-08-21 14:15:20,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 14:15:20,556 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-08-21 14:15:20,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 14:15:20,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:20,557 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] [2020-08-21 14:15:20,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 14:15:20,558 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:20,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:20,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1688384554, now seen corresponding path program 10 times [2020-08-21 14:15:20,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:20,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299212846] [2020-08-21 14:15:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 61 proven. 271 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-08-21 14:15:20,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299212846] [2020-08-21 14:15:20,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:20,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 14:15:20,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953022166] [2020-08-21 14:15:20,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 14:15:20,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:20,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 14:15:20,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:15:20,797 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 14 states. [2020-08-21 14:15:21,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:21,457 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2020-08-21 14:15:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 14:15:21,457 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2020-08-21 14:15:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:21,464 INFO L225 Difference]: With dead ends: 234 [2020-08-21 14:15:21,464 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 14:15:21,466 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 [2020-08-21 14:15:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 14:15:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 153. [2020-08-21 14:15:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 14:15:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2020-08-21 14:15:21,491 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 130 [2020-08-21 14:15:21,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:21,491 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2020-08-21 14:15:21,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 14:15:21,492 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2020-08-21 14:15:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 14:15:21,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:21,494 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] [2020-08-21 14:15:21,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 14:15:21,494 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:21,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:21,495 INFO L82 PathProgramCache]: Analyzing trace with hash -840848228, now seen corresponding path program 11 times [2020-08-21 14:15:21,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:21,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824392023] [2020-08-21 14:15:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 14:15:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 284 proven. 205 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2020-08-21 14:15:21,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824392023] [2020-08-21 14:15:21,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:21,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 14:15:21,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281809001] [2020-08-21 14:15:21,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 14:15:21,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:21,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 14:15:21,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:15:21,700 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand 13 states. [2020-08-21 14:15:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:22,150 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2020-08-21 14:15:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 14:15:22,151 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-21 14:15:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:22,153 INFO L225 Difference]: With dead ends: 218 [2020-08-21 14:15:22,153 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 14:15:22,156 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 [2020-08-21 14:15:22,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 14:15:22,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-08-21 14:15:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 14:15:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2020-08-21 14:15:22,183 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 154 [2020-08-21 14:15:22,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:22,183 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2020-08-21 14:15:22,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 14:15:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2020-08-21 14:15:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-21 14:15:22,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:22,187 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] [2020-08-21 14:15:22,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 14:15:22,188 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:22,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:22,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1311982393, now seen corresponding path program 12 times [2020-08-21 14:15:22,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:22,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686959231] [2020-08-21 14:15:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 80 proven. 422 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2020-08-21 14:15:22,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686959231] [2020-08-21 14:15:22,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:22,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:15:22,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20135680] [2020-08-21 14:15:22,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:15:22,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:22,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:15:22,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:15:22,536 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand 15 states. [2020-08-21 14:15:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:23,241 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2020-08-21 14:15:23,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 14:15:23,244 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 161 [2020-08-21 14:15:23,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:23,249 INFO L225 Difference]: With dead ends: 184 [2020-08-21 14:15:23,250 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 14:15:23,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-08-21 14:15:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 14:15:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 167. [2020-08-21 14:15:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-21 14:15:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 188 transitions. [2020-08-21 14:15:23,291 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 188 transitions. Word has length 161 [2020-08-21 14:15:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:23,293 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 188 transitions. [2020-08-21 14:15:23,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:15:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 188 transitions. [2020-08-21 14:15:23,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-21 14:15:23,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:23,299 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] [2020-08-21 14:15:23,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 14:15:23,299 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:23,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1425986384, now seen corresponding path program 13 times [2020-08-21 14:15:23,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:23,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200714512] [2020-08-21 14:15:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 89 proven. 521 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2020-08-21 14:15:23,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200714512] [2020-08-21 14:15:23,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:23,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:15:23,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831511460] [2020-08-21 14:15:23,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:15:23,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:23,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:15:23,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:15:23,738 INFO L87 Difference]: Start difference. First operand 167 states and 188 transitions. Second operand 16 states. [2020-08-21 14:15:24,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:24,612 INFO L93 Difference]: Finished difference Result 295 states and 344 transitions. [2020-08-21 14:15:24,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-21 14:15:24,613 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 168 [2020-08-21 14:15:24,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:24,615 INFO L225 Difference]: With dead ends: 295 [2020-08-21 14:15:24,616 INFO L226 Difference]: Without dead ends: 218 [2020-08-21 14:15:24,617 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 [2020-08-21 14:15:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-08-21 14:15:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 187. [2020-08-21 14:15:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-08-21 14:15:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 216 transitions. [2020-08-21 14:15:24,640 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 216 transitions. Word has length 168 [2020-08-21 14:15:24,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:24,641 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 216 transitions. [2020-08-21 14:15:24,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:15:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 216 transitions. [2020-08-21 14:15:24,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-08-21 14:15:24,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:24,644 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] [2020-08-21 14:15:24,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 14:15:24,645 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:24,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:24,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1410050128, now seen corresponding path program 14 times [2020-08-21 14:15:24,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:24,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046954252] [2020-08-21 14:15:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 14:15:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-21 14:15:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-21 14:15:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2506 backedges. 707 proven. 405 refuted. 0 times theorem prover too weak. 1394 trivial. 0 not checked. [2020-08-21 14:15:24,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046954252] [2020-08-21 14:15:24,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:24,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:15:24,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203184787] [2020-08-21 14:15:24,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:15:24,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:24,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:15:24,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:15:24,967 INFO L87 Difference]: Start difference. First operand 187 states and 216 transitions. Second operand 15 states. [2020-08-21 14:15:25,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:25,726 INFO L93 Difference]: Finished difference Result 304 states and 358 transitions. [2020-08-21 14:15:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 14:15:25,727 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2020-08-21 14:15:25,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:25,729 INFO L225 Difference]: With dead ends: 304 [2020-08-21 14:15:25,730 INFO L226 Difference]: Without dead ends: 209 [2020-08-21 14:15:25,731 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 [2020-08-21 14:15:25,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-08-21 14:15:25,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 202. [2020-08-21 14:15:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-21 14:15:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2020-08-21 14:15:25,766 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 226 [2020-08-21 14:15:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:25,768 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2020-08-21 14:15:25,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:15:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2020-08-21 14:15:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-08-21 14:15:25,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:25,774 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] [2020-08-21 14:15:25,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 14:15:25,775 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:25,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:25,775 INFO L82 PathProgramCache]: Analyzing trace with hash 400238009, now seen corresponding path program 15 times [2020-08-21 14:15:25,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:25,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569615339] [2020-08-21 14:15:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-21 14:15:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:25,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2692 backedges. 833 proven. 226 refuted. 0 times theorem prover too weak. 1633 trivial. 0 not checked. [2020-08-21 14:15:26,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569615339] [2020-08-21 14:15:26,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:26,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 14:15:26,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764123445] [2020-08-21 14:15:26,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 14:15:26,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:26,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 14:15:26,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:15:26,014 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand 13 states. [2020-08-21 14:15:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:26,478 INFO L93 Difference]: Finished difference Result 356 states and 421 transitions. [2020-08-21 14:15:26,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 14:15:26,479 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 233 [2020-08-21 14:15:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:26,481 INFO L225 Difference]: With dead ends: 356 [2020-08-21 14:15:26,481 INFO L226 Difference]: Without dead ends: 203 [2020-08-21 14:15:26,482 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 [2020-08-21 14:15:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-08-21 14:15:26,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2020-08-21 14:15:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-21 14:15:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2020-08-21 14:15:26,506 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 233 [2020-08-21 14:15:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:26,507 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2020-08-21 14:15:26,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 14:15:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2020-08-21 14:15:26,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-21 14:15:26,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:26,511 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] [2020-08-21 14:15:26,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-21 14:15:26,511 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:26,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1039853412, now seen corresponding path program 16 times [2020-08-21 14:15:26,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:26,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966768107] [2020-08-21 14:15:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2885 backedges. 116 proven. 1050 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2020-08-21 14:15:26,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966768107] [2020-08-21 14:15:26,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:26,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:15:26,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237196440] [2020-08-21 14:15:26,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:15:26,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:26,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:15:26,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:15:26,814 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 16 states. [2020-08-21 14:15:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:28,000 INFO L93 Difference]: Finished difference Result 398 states and 480 transitions. [2020-08-21 14:15:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 14:15:28,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 240 [2020-08-21 14:15:28,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:28,003 INFO L225 Difference]: With dead ends: 398 [2020-08-21 14:15:28,003 INFO L226 Difference]: Without dead ends: 306 [2020-08-21 14:15:28,005 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 [2020-08-21 14:15:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-21 14:15:28,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 267. [2020-08-21 14:15:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-21 14:15:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 318 transitions. [2020-08-21 14:15:28,042 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 318 transitions. Word has length 240 [2020-08-21 14:15:28,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:28,043 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 318 transitions. [2020-08-21 14:15:28,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:15:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 318 transitions. [2020-08-21 14:15:28,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-21 14:15:28,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:28,049 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] [2020-08-21 14:15:28,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-21 14:15:28,049 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:28,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:28,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1581346975, now seen corresponding path program 17 times [2020-08-21 14:15:28,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:28,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088986453] [2020-08-21 14:15:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 14:15:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 937 proven. 633 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2020-08-21 14:15:28,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088986453] [2020-08-21 14:15:28,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:28,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:15:28,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305234646] [2020-08-21 14:15:28,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:15:28,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:28,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:15:28,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:15:28,339 INFO L87 Difference]: Start difference. First operand 267 states and 318 transitions. Second operand 15 states. [2020-08-21 14:15:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:29,045 INFO L93 Difference]: Finished difference Result 461 states and 558 transitions. [2020-08-21 14:15:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 14:15:29,046 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 271 [2020-08-21 14:15:29,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:29,048 INFO L225 Difference]: With dead ends: 461 [2020-08-21 14:15:29,048 INFO L226 Difference]: Without dead ends: 286 [2020-08-21 14:15:29,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=396, Invalid=794, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 14:15:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-21 14:15:29,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 239. [2020-08-21 14:15:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-21 14:15:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 278 transitions. [2020-08-21 14:15:29,078 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 278 transitions. Word has length 271 [2020-08-21 14:15:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:29,079 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 278 transitions. [2020-08-21 14:15:29,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:15:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 278 transitions. [2020-08-21 14:15:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-08-21 14:15:29,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:29,081 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] [2020-08-21 14:15:29,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-21 14:15:29,082 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:29,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:29,082 INFO L82 PathProgramCache]: Analyzing trace with hash -2078560834, now seen corresponding path program 18 times [2020-08-21 14:15:29,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:29,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500545615] [2020-08-21 14:15:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4014 backedges. 429 proven. 1177 refuted. 0 times theorem prover too weak. 2408 trivial. 0 not checked. [2020-08-21 14:15:29,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500545615] [2020-08-21 14:15:29,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:29,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 14:15:29,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163983292] [2020-08-21 14:15:29,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 14:15:29,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:29,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 14:15:29,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-08-21 14:15:29,473 INFO L87 Difference]: Start difference. First operand 239 states and 278 transitions. Second operand 17 states. [2020-08-21 14:15:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:30,197 INFO L93 Difference]: Finished difference Result 312 states and 355 transitions. [2020-08-21 14:15:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 14:15:30,203 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 278 [2020-08-21 14:15:30,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:30,206 INFO L225 Difference]: With dead ends: 312 [2020-08-21 14:15:30,206 INFO L226 Difference]: Without dead ends: 310 [2020-08-21 14:15:30,207 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 [2020-08-21 14:15:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-21 14:15:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 295. [2020-08-21 14:15:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-21 14:15:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 336 transitions. [2020-08-21 14:15:30,247 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 336 transitions. Word has length 278 [2020-08-21 14:15:30,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:30,247 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 336 transitions. [2020-08-21 14:15:30,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 14:15:30,248 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 336 transitions. [2020-08-21 14:15:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-08-21 14:15:30,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:30,250 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] [2020-08-21 14:15:30,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-21 14:15:30,250 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:30,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:30,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1263938933, now seen corresponding path program 19 times [2020-08-21 14:15:30,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:30,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126247557] [2020-08-21 14:15:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 150 proven. 1638 refuted. 0 times theorem prover too weak. 2462 trivial. 0 not checked. [2020-08-21 14:15:30,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126247557] [2020-08-21 14:15:30,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:30,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 14:15:30,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918005726] [2020-08-21 14:15:30,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 14:15:30,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:30,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 14:15:30,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:15:30,609 INFO L87 Difference]: Start difference. First operand 295 states and 336 transitions. Second operand 18 states. [2020-08-21 14:15:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:32,075 INFO L93 Difference]: Finished difference Result 501 states and 595 transitions. [2020-08-21 14:15:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-21 14:15:32,076 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 285 [2020-08-21 14:15:32,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:32,078 INFO L225 Difference]: With dead ends: 501 [2020-08-21 14:15:32,078 INFO L226 Difference]: Without dead ends: 410 [2020-08-21 14:15:32,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1240, Invalid=3182, Unknown=0, NotChecked=0, Total=4422 [2020-08-21 14:15:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-08-21 14:15:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 316. [2020-08-21 14:15:32,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-21 14:15:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 365 transitions. [2020-08-21 14:15:32,120 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 365 transitions. Word has length 285 [2020-08-21 14:15:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:32,121 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 365 transitions. [2020-08-21 14:15:32,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 14:15:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 365 transitions. [2020-08-21 14:15:32,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-08-21 14:15:32,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:32,124 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] [2020-08-21 14:15:32,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-21 14:15:32,124 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:32,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:32,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1910860175, now seen corresponding path program 20 times [2020-08-21 14:15:32,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:32,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133705771] [2020-08-21 14:15:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-21 14:15:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5603 backedges. 1239 proven. 1145 refuted. 0 times theorem prover too weak. 3219 trivial. 0 not checked. [2020-08-21 14:15:32,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133705771] [2020-08-21 14:15:32,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:32,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 14:15:32,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108922410] [2020-08-21 14:15:32,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 14:15:32,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:32,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 14:15:32,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-08-21 14:15:32,553 INFO L87 Difference]: Start difference. First operand 316 states and 365 transitions. Second operand 17 states. [2020-08-21 14:15:33,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:33,472 INFO L93 Difference]: Finished difference Result 538 states and 640 transitions. [2020-08-21 14:15:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 14:15:33,473 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 323 [2020-08-21 14:15:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:33,475 INFO L225 Difference]: With dead ends: 538 [2020-08-21 14:15:33,476 INFO L226 Difference]: Without dead ends: 340 [2020-08-21 14:15:33,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=633, Invalid=1259, Unknown=0, NotChecked=0, Total=1892 [2020-08-21 14:15:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-21 14:15:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 334. [2020-08-21 14:15:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-21 14:15:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 387 transitions. [2020-08-21 14:15:33,528 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 387 transitions. Word has length 323 [2020-08-21 14:15:33,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:33,528 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 387 transitions. [2020-08-21 14:15:33,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 14:15:33,529 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 387 transitions. [2020-08-21 14:15:33,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-21 14:15:33,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:33,531 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] [2020-08-21 14:15:33,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-21 14:15:33,533 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:33,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:33,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1089690308, now seen corresponding path program 21 times [2020-08-21 14:15:33,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:33,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735234155] [2020-08-21 14:15:33,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:33,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5882 backedges. 443 proven. 2023 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2020-08-21 14:15:34,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735234155] [2020-08-21 14:15:34,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:34,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:15:34,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943845537] [2020-08-21 14:15:34,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:15:34,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:34,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:15:34,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:15:34,114 INFO L87 Difference]: Start difference. First operand 334 states and 387 transitions. Second operand 15 states. [2020-08-21 14:15:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:35,104 INFO L93 Difference]: Finished difference Result 490 states and 557 transitions. [2020-08-21 14:15:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 14:15:35,104 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 330 [2020-08-21 14:15:35,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:35,108 INFO L225 Difference]: With dead ends: 490 [2020-08-21 14:15:35,109 INFO L226 Difference]: Without dead ends: 488 [2020-08-21 14:15:35,110 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 [2020-08-21 14:15:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-21 14:15:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 443. [2020-08-21 14:15:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-21 14:15:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 510 transitions. [2020-08-21 14:15:35,176 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 510 transitions. Word has length 330 [2020-08-21 14:15:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:35,177 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 510 transitions. [2020-08-21 14:15:35,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:15:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 510 transitions. [2020-08-21 14:15:35,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-08-21 14:15:35,181 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:35,181 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] [2020-08-21 14:15:35,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-21 14:15:35,182 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:35,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:35,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1713724203, now seen corresponding path program 22 times [2020-08-21 14:15:35,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:35,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150962600] [2020-08-21 14:15:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-21 14:15:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-21 14:15:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-21 14:15:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-21 14:15:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-21 14:15:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-21 14:15:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7781 backedges. 455 proven. 2337 refuted. 0 times theorem prover too weak. 4989 trivial. 0 not checked. [2020-08-21 14:15:35,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150962600] [2020-08-21 14:15:35,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:35,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 14:15:35,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740866477] [2020-08-21 14:15:35,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 14:15:35,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:35,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 14:15:35,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:15:35,812 INFO L87 Difference]: Start difference. First operand 443 states and 510 transitions. Second operand 18 states. [2020-08-21 14:15:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:36,531 INFO L93 Difference]: Finished difference Result 503 states and 584 transitions. [2020-08-21 14:15:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 14:15:36,531 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 375 [2020-08-21 14:15:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:36,534 INFO L225 Difference]: With dead ends: 503 [2020-08-21 14:15:36,534 INFO L226 Difference]: Without dead ends: 501 [2020-08-21 14:15:36,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 14:15:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-08-21 14:15:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 457. [2020-08-21 14:15:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-21 14:15:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 526 transitions. [2020-08-21 14:15:36,583 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 526 transitions. Word has length 375 [2020-08-21 14:15:36,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:36,584 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 526 transitions. [2020-08-21 14:15:36,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 14:15:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 526 transitions. [2020-08-21 14:15:36,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-08-21 14:15:36,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:36,587 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] [2020-08-21 14:15:36,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-21 14:15:36,588 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:36,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:36,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1934385026, now seen corresponding path program 23 times [2020-08-21 14:15:36,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:36,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25301205] [2020-08-21 14:15:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-21 14:15:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-21 14:15:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-21 14:15:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-21 14:15:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-21 14:15:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-21 14:15:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:36,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-08-21 14:15:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8110 backedges. 1646 proven. 1795 refuted. 0 times theorem prover too weak. 4669 trivial. 0 not checked. [2020-08-21 14:15:37,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25301205] [2020-08-21 14:15:37,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:37,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 14:15:37,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029883691] [2020-08-21 14:15:37,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 14:15:37,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:37,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 14:15:37,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:15:37,031 INFO L87 Difference]: Start difference. First operand 457 states and 526 transitions. Second operand 13 states. [2020-08-21 14:15:37,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:37,656 INFO L93 Difference]: Finished difference Result 947 states and 1112 transitions. [2020-08-21 14:15:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 14:15:37,657 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 382 [2020-08-21 14:15:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:37,660 INFO L225 Difference]: With dead ends: 947 [2020-08-21 14:15:37,661 INFO L226 Difference]: Without dead ends: 506 [2020-08-21 14:15:37,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=345, Invalid=711, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 14:15:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-21 14:15:37,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 503. [2020-08-21 14:15:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-21 14:15:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 595 transitions. [2020-08-21 14:15:37,739 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 595 transitions. Word has length 382 [2020-08-21 14:15:37,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:37,739 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 595 transitions. [2020-08-21 14:15:37,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 14:15:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 595 transitions. [2020-08-21 14:15:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-08-21 14:15:37,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:37,744 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] [2020-08-21 14:15:37,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-21 14:15:37,744 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:37,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1577141198, now seen corresponding path program 24 times [2020-08-21 14:15:37,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:37,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193106018] [2020-08-21 14:15:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-21 14:15:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-21 14:15:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-21 14:15:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-21 14:15:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-21 14:15:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-08-21 14:15:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-21 14:15:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 14:15:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-21 14:15:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-21 14:15:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-21 14:15:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-21 14:15:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-21 14:15:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-21 14:15:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-21 14:15:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-21 14:15:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-21 14:15:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:37,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-21 14:15:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-21 14:15:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:15:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11597 backedges. 3275 proven. 704 refuted. 0 times theorem prover too weak. 7618 trivial. 0 not checked. [2020-08-21 14:15:38,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193106018] [2020-08-21 14:15:38,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:38,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 14:15:38,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507949738] [2020-08-21 14:15:38,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:15:38,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:38,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:15:38,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:15:38,210 INFO L87 Difference]: Start difference. First operand 503 states and 595 transitions. Second operand 11 states. [2020-08-21 14:15:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:38,614 INFO L93 Difference]: Finished difference Result 702 states and 825 transitions. [2020-08-21 14:15:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 14:15:38,614 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 454 [2020-08-21 14:15:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:38,617 INFO L225 Difference]: With dead ends: 702 [2020-08-21 14:15:38,617 INFO L226 Difference]: Without dead ends: 412 [2020-08-21 14:15:38,618 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 [2020-08-21 14:15:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-21 14:15:38,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-21 14:15:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-21 14:15:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 473 transitions. [2020-08-21 14:15:38,671 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 473 transitions. Word has length 454 [2020-08-21 14:15:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:38,672 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 473 transitions. [2020-08-21 14:15:38,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:15:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 473 transitions. [2020-08-21 14:15:38,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-08-21 14:15:38,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:38,676 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] [2020-08-21 14:15:38,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-21 14:15:38,677 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:38,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:38,677 INFO L82 PathProgramCache]: Analyzing trace with hash 389126169, now seen corresponding path program 25 times [2020-08-21 14:15:38,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:38,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112043492] [2020-08-21 14:15:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-21 14:15:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 14:15:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-21 14:15:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-21 14:15:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-21 14:15:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-21 14:15:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-21 14:15:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-21 14:15:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-21 14:15:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-21 14:15:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-21 14:15:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-21 14:15:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-21 14:15:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-21 14:15:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-21 14:15:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-21 14:15:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-21 14:15:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:38,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:15:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 14212 backedges. 3869 proven. 1294 refuted. 0 times theorem prover too weak. 9049 trivial. 0 not checked. [2020-08-21 14:15:39,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112043492] [2020-08-21 14:15:39,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:39,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:15:39,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129941220] [2020-08-21 14:15:39,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:15:39,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:39,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:15:39,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:15:39,103 INFO L87 Difference]: Start difference. First operand 412 states and 473 transitions. Second operand 12 states. [2020-08-21 14:15:39,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:39,539 INFO L93 Difference]: Finished difference Result 611 states and 701 transitions. [2020-08-21 14:15:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 14:15:39,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 499 [2020-08-21 14:15:39,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:39,544 INFO L225 Difference]: With dead ends: 611 [2020-08-21 14:15:39,545 INFO L226 Difference]: Without dead ends: 412 [2020-08-21 14:15:39,547 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 [2020-08-21 14:15:39,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-21 14:15:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-21 14:15:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-21 14:15:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 471 transitions. [2020-08-21 14:15:39,597 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 471 transitions. Word has length 499 [2020-08-21 14:15:39,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:39,598 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 471 transitions. [2020-08-21 14:15:39,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:15:39,598 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 471 transitions. [2020-08-21 14:15:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-08-21 14:15:39,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:39,602 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] [2020-08-21 14:15:39,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-21 14:15:39,603 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:39,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:39,603 INFO L82 PathProgramCache]: Analyzing trace with hash 206006162, now seen corresponding path program 26 times [2020-08-21 14:15:39,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:39,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160702329] [2020-08-21 14:15:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-21 14:15:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:15:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-21 14:15:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-21 14:15:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-21 14:15:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-21 14:15:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-21 14:15:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-21 14:15:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-21 14:15:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-21 14:15:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-21 14:15:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-08-21 14:15:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-08-21 14:15:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-21 14:15:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-21 14:15:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-21 14:15:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 14:15:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:15:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 17094 backedges. 4741 proven. 1771 refuted. 0 times theorem prover too weak. 10582 trivial. 0 not checked. [2020-08-21 14:15:40,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160702329] [2020-08-21 14:15:40,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:40,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 14:15:40,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602068867] [2020-08-21 14:15:40,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 14:15:40,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 14:15:40,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-08-21 14:15:40,217 INFO L87 Difference]: Start difference. First operand 412 states and 471 transitions. Second operand 19 states. [2020-08-21 14:15:41,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:41,520 INFO L93 Difference]: Finished difference Result 617 states and 706 transitions. [2020-08-21 14:15:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-21 14:15:41,521 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 544 [2020-08-21 14:15:41,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:41,524 INFO L225 Difference]: With dead ends: 617 [2020-08-21 14:15:41,524 INFO L226 Difference]: Without dead ends: 416 [2020-08-21 14:15:41,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=965, Invalid=1897, Unknown=0, NotChecked=0, Total=2862 [2020-08-21 14:15:41,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-08-21 14:15:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2020-08-21 14:15:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 14:15:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 474 transitions. [2020-08-21 14:15:41,580 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 474 transitions. Word has length 544 [2020-08-21 14:15:41,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:41,580 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 474 transitions. [2020-08-21 14:15:41,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 14:15:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 474 transitions. [2020-08-21 14:15:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-08-21 14:15:41,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:41,585 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] [2020-08-21 14:15:41,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-21 14:15:41,586 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:41,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:41,586 INFO L82 PathProgramCache]: Analyzing trace with hash 22704138, now seen corresponding path program 27 times [2020-08-21 14:15:41,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:41,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421145023] [2020-08-21 14:15:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:15:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:15:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:15:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-21 14:15:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:15:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-21 14:15:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-21 14:15:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:15:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-21 14:15:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-21 14:15:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-21 14:15:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:15:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:15:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-21 14:15:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-21 14:15:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-21 14:15:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 14:15:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:15:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:15:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:15:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:42,156 INFO L134 CoverageAnalysis]: Checked inductivity of 18075 backedges. 5945 proven. 607 refuted. 0 times theorem prover too weak. 11523 trivial. 0 not checked. [2020-08-21 14:15:42,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421145023] [2020-08-21 14:15:42,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:42,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:15:42,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272223043] [2020-08-21 14:15:42,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:15:42,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:42,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:15:42,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:15:42,158 INFO L87 Difference]: Start difference. First operand 416 states and 474 transitions. Second operand 15 states. [2020-08-21 14:15:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:42,803 INFO L93 Difference]: Finished difference Result 618 states and 703 transitions. [2020-08-21 14:15:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 14:15:42,804 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 558 [2020-08-21 14:15:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:42,807 INFO L225 Difference]: With dead ends: 618 [2020-08-21 14:15:42,807 INFO L226 Difference]: Without dead ends: 417 [2020-08-21 14:15:42,808 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 [2020-08-21 14:15:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-21 14:15:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-21 14:15:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 14:15:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 473 transitions. [2020-08-21 14:15:42,870 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 473 transitions. Word has length 558 [2020-08-21 14:15:42,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:42,871 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 473 transitions. [2020-08-21 14:15:42,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:15:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 473 transitions. [2020-08-21 14:15:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-08-21 14:15:42,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:42,879 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] [2020-08-21 14:15:42,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-21 14:15:42,879 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:42,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:42,880 INFO L82 PathProgramCache]: Analyzing trace with hash -289471297, now seen corresponding path program 28 times [2020-08-21 14:15:42,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:42,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682796371] [2020-08-21 14:15:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:15:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:15:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:15:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 14:15:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:15:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 14:15:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-21 14:15:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:15:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 14:15:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-21 14:15:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-21 14:15:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:15:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:15:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 14:15:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-21 14:15:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-21 14:15:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 14:15:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:15:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:15:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:15:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 14:15:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18576 backedges. 5565 proven. 1561 refuted. 0 times theorem prover too weak. 11450 trivial. 0 not checked. [2020-08-21 14:15:43,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682796371] [2020-08-21 14:15:43,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:43,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 14:15:43,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741834574] [2020-08-21 14:15:43,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 14:15:43,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:43,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 14:15:43,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-08-21 14:15:43,568 INFO L87 Difference]: Start difference. First operand 416 states and 473 transitions. Second operand 17 states. [2020-08-21 14:15:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:44,415 INFO L93 Difference]: Finished difference Result 618 states and 701 transitions. [2020-08-21 14:15:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 14:15:44,415 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 565 [2020-08-21 14:15:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:44,419 INFO L225 Difference]: With dead ends: 618 [2020-08-21 14:15:44,420 INFO L226 Difference]: Without dead ends: 417 [2020-08-21 14:15:44,421 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 [2020-08-21 14:15:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-21 14:15:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-21 14:15:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 14:15:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 472 transitions. [2020-08-21 14:15:44,474 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 472 transitions. Word has length 565 [2020-08-21 14:15:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:44,475 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 472 transitions. [2020-08-21 14:15:44,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 14:15:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 472 transitions. [2020-08-21 14:15:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-21 14:15:44,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:44,479 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] [2020-08-21 14:15:44,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-21 14:15:44,480 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:44,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:44,480 INFO L82 PathProgramCache]: Analyzing trace with hash 126799646, now seen corresponding path program 29 times [2020-08-21 14:15:44,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:44,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047489013] [2020-08-21 14:15:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:15:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:15:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:15:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 14:15:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:15:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 14:15:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 14:15:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:15:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 14:15:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 14:15:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-21 14:15:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:15:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:15:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 14:15:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 14:15:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-21 14:15:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 14:15:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:15:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:15:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:15:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 14:15:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 14:15:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 19084 backedges. 4945 proven. 2699 refuted. 0 times theorem prover too weak. 11440 trivial. 0 not checked. [2020-08-21 14:15:45,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047489013] [2020-08-21 14:15:45,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:45,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 14:15:45,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637204854] [2020-08-21 14:15:45,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 14:15:45,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 14:15:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-08-21 14:15:45,091 INFO L87 Difference]: Start difference. First operand 416 states and 472 transitions. Second operand 19 states. [2020-08-21 14:15:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:46,275 INFO L93 Difference]: Finished difference Result 620 states and 702 transitions. [2020-08-21 14:15:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-21 14:15:46,276 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 572 [2020-08-21 14:15:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:46,279 INFO L225 Difference]: With dead ends: 620 [2020-08-21 14:15:46,279 INFO L226 Difference]: Without dead ends: 419 [2020-08-21 14:15:46,281 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 [2020-08-21 14:15:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-08-21 14:15:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 418. [2020-08-21 14:15:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-21 14:15:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 474 transitions. [2020-08-21 14:15:46,333 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 474 transitions. Word has length 572 [2020-08-21 14:15:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:46,334 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 474 transitions. [2020-08-21 14:15:46,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 14:15:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 474 transitions. [2020-08-21 14:15:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-08-21 14:15:46,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:46,339 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] [2020-08-21 14:15:46,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-21 14:15:46,340 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:46,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:46,340 INFO L82 PathProgramCache]: Analyzing trace with hash -847775853, now seen corresponding path program 30 times [2020-08-21 14:15:46,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:46,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579456964] [2020-08-21 14:15:46,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:15:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:15:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:15:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 14:15:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:15:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 14:15:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 14:15:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:15:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 14:15:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 14:15:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 14:15:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:15:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:15:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 14:15:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 14:15:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 14:15:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 14:15:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:15:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:15:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:15:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 14:15:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 14:15:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:46,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 14:15:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 19599 backedges. 2008 proven. 5249 refuted. 0 times theorem prover too weak. 12342 trivial. 0 not checked. [2020-08-21 14:15:47,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579456964] [2020-08-21 14:15:47,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:47,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-21 14:15:47,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280791109] [2020-08-21 14:15:47,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-21 14:15:47,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:47,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-21 14:15:47,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-08-21 14:15:47,012 INFO L87 Difference]: Start difference. First operand 418 states and 474 transitions. Second operand 20 states. [2020-08-21 14:15:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:47,789 INFO L93 Difference]: Finished difference Result 504 states and 565 transitions. [2020-08-21 14:15:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 14:15:47,789 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 579 [2020-08-21 14:15:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:47,792 INFO L225 Difference]: With dead ends: 504 [2020-08-21 14:15:47,792 INFO L226 Difference]: Without dead ends: 502 [2020-08-21 14:15:47,793 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 [2020-08-21 14:15:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-21 14:15:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 478. [2020-08-21 14:15:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-21 14:15:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 538 transitions. [2020-08-21 14:15:47,846 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 538 transitions. Word has length 579 [2020-08-21 14:15:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:47,846 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 538 transitions. [2020-08-21 14:15:47,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-21 14:15:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 538 transitions. [2020-08-21 14:15:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-08-21 14:15:47,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:47,852 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] [2020-08-21 14:15:47,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-21 14:15:47,852 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:47,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:47,852 INFO L82 PathProgramCache]: Analyzing trace with hash 267632406, now seen corresponding path program 31 times [2020-08-21 14:15:47,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:47,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111824228] [2020-08-21 14:15:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:15:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:15:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:15:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 14:15:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:15:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 14:15:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 14:15:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:15:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 14:15:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 14:15:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 14:15:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:15:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:15:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 14:15:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 14:15:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 14:15:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-21 14:15:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:15:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:15:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:15:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 14:15:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 14:15:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 14:15:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 14:15:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 20121 backedges. 4227 proven. 4030 refuted. 0 times theorem prover too weak. 11864 trivial. 0 not checked. [2020-08-21 14:15:48,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111824228] [2020-08-21 14:15:48,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:48,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-21 14:15:48,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700777483] [2020-08-21 14:15:48,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-21 14:15:48,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:48,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-21 14:15:48,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-08-21 14:15:48,498 INFO L87 Difference]: Start difference. First operand 478 states and 538 transitions. Second operand 21 states. [2020-08-21 14:15:50,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:50,109 INFO L93 Difference]: Finished difference Result 714 states and 810 transitions. [2020-08-21 14:15:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-21 14:15:50,110 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 586 [2020-08-21 14:15:50,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:50,112 INFO L225 Difference]: With dead ends: 714 [2020-08-21 14:15:50,112 INFO L226 Difference]: Without dead ends: 479 [2020-08-21 14:15:50,114 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 [2020-08-21 14:15:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-08-21 14:15:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 478. [2020-08-21 14:15:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-21 14:15:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 536 transitions. [2020-08-21 14:15:50,172 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 536 transitions. Word has length 586 [2020-08-21 14:15:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:50,173 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 536 transitions. [2020-08-21 14:15:50,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-21 14:15:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 536 transitions. [2020-08-21 14:15:50,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2020-08-21 14:15:50,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:50,178 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] [2020-08-21 14:15:50,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-21 14:15:50,178 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:50,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:50,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1197037185, now seen corresponding path program 32 times [2020-08-21 14:15:50,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:50,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571419315] [2020-08-21 14:15:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:15:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:15:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:15:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 14:15:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:15:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 14:15:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 14:15:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:15:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 14:15:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 14:15:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 14:15:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:15:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:15:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 14:15:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 14:15:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 14:15:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 14:15:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:15:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:15:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:15:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 14:15:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 14:15:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 14:15:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 14:15:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 14:15:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 20650 backedges. 2012 proven. 5637 refuted. 0 times theorem prover too weak. 13001 trivial. 0 not checked. [2020-08-21 14:15:50,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571419315] [2020-08-21 14:15:50,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:50,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-21 14:15:50,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114846242] [2020-08-21 14:15:50,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-21 14:15:50,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:50,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-21 14:15:50,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-08-21 14:15:50,889 INFO L87 Difference]: Start difference. First operand 478 states and 536 transitions. Second operand 21 states. [2020-08-21 14:15:51,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:51,701 INFO L93 Difference]: Finished difference Result 537 states and 603 transitions. [2020-08-21 14:15:51,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 14:15:51,702 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 593 [2020-08-21 14:15:51,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:51,706 INFO L225 Difference]: With dead ends: 537 [2020-08-21 14:15:51,706 INFO L226 Difference]: Without dead ends: 535 [2020-08-21 14:15:51,707 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 [2020-08-21 14:15:51,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-08-21 14:15:51,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 505. [2020-08-21 14:15:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-08-21 14:15:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 570 transitions. [2020-08-21 14:15:51,764 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 570 transitions. Word has length 593 [2020-08-21 14:15:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:51,765 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 570 transitions. [2020-08-21 14:15:51,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-21 14:15:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 570 transitions. [2020-08-21 14:15:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-08-21 14:15:51,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:51,770 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] [2020-08-21 14:15:51,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-21 14:15:51,770 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:51,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:51,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1218530218, now seen corresponding path program 33 times [2020-08-21 14:15:51,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:51,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406829966] [2020-08-21 14:15:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:15:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:15:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:15:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 14:15:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:15:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 14:15:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 14:15:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:15:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 14:15:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 14:15:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 14:15:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:15:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:15:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 14:15:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 14:15:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 14:15:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 14:15:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:15:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:15:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:15:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 14:15:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 14:15:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 14:15:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 14:15:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 14:15:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-21 14:15:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 21186 backedges. 342 proven. 8400 refuted. 0 times theorem prover too weak. 12444 trivial. 0 not checked. [2020-08-21 14:15:52,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406829966] [2020-08-21 14:15:52,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:52,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-21 14:15:52,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935017794] [2020-08-21 14:15:52,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-21 14:15:52,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:52,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-21 14:15:52,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-08-21 14:15:52,684 INFO L87 Difference]: Start difference. First operand 505 states and 570 transitions. Second operand 24 states. [2020-08-21 14:15:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:55,728 INFO L93 Difference]: Finished difference Result 898 states and 1049 transitions. [2020-08-21 14:15:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-08-21 14:15:55,729 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 600 [2020-08-21 14:15:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:55,733 INFO L225 Difference]: With dead ends: 898 [2020-08-21 14:15:55,733 INFO L226 Difference]: Without dead ends: 631 [2020-08-21 14:15:55,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5052 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3553, Invalid=8879, Unknown=0, NotChecked=0, Total=12432 [2020-08-21 14:15:55,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-21 14:15:55,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-21 14:15:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-21 14:15:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 730 transitions. [2020-08-21 14:15:55,834 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 730 transitions. Word has length 600 [2020-08-21 14:15:55,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:55,834 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 730 transitions. [2020-08-21 14:15:55,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-21 14:15:55,835 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 730 transitions. [2020-08-21 14:15:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-08-21 14:15:55,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:55,843 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] [2020-08-21 14:15:55,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-21 14:15:55,844 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:55,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:55,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1731219376, now seen corresponding path program 34 times [2020-08-21 14:15:55,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:55,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445166008] [2020-08-21 14:15:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:15:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:15:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:15:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 14:15:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:15:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 14:15:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 14:15:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:15:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 14:15:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 14:15:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 14:15:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:15:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:15:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 14:15:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 14:15:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 14:15:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 14:15:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:15:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:15:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:15:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 14:15:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 14:15:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 14:15:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 14:15:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 14:15:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-08-21 14:15:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-21 14:15:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-21 14:15:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-21 14:15:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-21 14:15:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-08-21 14:15:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-21 14:15:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-21 14:15:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-21 14:15:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-21 14:15:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-21 14:15:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-08-21 14:15:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-21 14:15:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-21 14:15:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-21 14:15:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-21 14:15:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-21 14:15:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-21 14:15:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-08-21 14:15:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-21 14:15:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-21 14:15:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-21 14:15:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-21 14:15:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-21 14:15:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-21 14:15:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-21 14:15:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-08-21 14:15:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-21 14:15:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-21 14:15:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-21 14:15:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-21 14:15:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-21 14:15:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-21 14:15:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-21 14:15:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-21 14:15:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 44431 backedges. 11950 proven. 5563 refuted. 0 times theorem prover too weak. 26918 trivial. 0 not checked. [2020-08-21 14:15:56,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445166008] [2020-08-21 14:15:56,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:15:56,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-21 14:15:56,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776153266] [2020-08-21 14:15:56,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-21 14:15:56,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:15:56,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-21 14:15:56,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-08-21 14:15:56,831 INFO L87 Difference]: Start difference. First operand 628 states and 730 transitions. Second operand 23 states. [2020-08-21 14:15:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:15:59,005 INFO L93 Difference]: Finished difference Result 923 states and 1077 transitions. [2020-08-21 14:15:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-21 14:15:59,005 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 856 [2020-08-21 14:15:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:15:59,009 INFO L225 Difference]: With dead ends: 923 [2020-08-21 14:15:59,009 INFO L226 Difference]: Without dead ends: 631 [2020-08-21 14:15:59,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1873, Invalid=3677, Unknown=0, NotChecked=0, Total=5550 [2020-08-21 14:15:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-21 14:15:59,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-21 14:15:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-21 14:15:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 728 transitions. [2020-08-21 14:15:59,106 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 728 transitions. Word has length 856 [2020-08-21 14:15:59,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:15:59,106 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 728 transitions. [2020-08-21 14:15:59,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-21 14:15:59,107 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 728 transitions. [2020-08-21 14:15:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-08-21 14:15:59,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:15:59,118 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] [2020-08-21 14:15:59,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-08-21 14:15:59,119 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:15:59,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:15:59,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2044024613, now seen corresponding path program 35 times [2020-08-21 14:15:59,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:15:59,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586029872] [2020-08-21 14:15:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:15:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:15:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:15:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:15:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:15:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:15:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:15:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:15:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:15:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:15:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:15:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:15:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:15:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:15:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:15:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:15:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:15:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:15:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:15:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:15:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:15:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:15:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:15:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:15:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:15:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:15:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:15:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:15:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:15:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:15:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:15:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:15:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:15:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:15:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:15:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:15:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:15:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:15:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:15:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:15:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:15:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:15:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:15:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:15:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:15:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:15:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 14:15:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:15:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:15:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:15:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:15:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 14:15:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 14:15:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:15:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:15:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:15:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:15:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 14:15:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 14:15:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 14:15:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:15:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:15:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:15:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:15:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 14:15:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 14:15:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 14:15:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 14:15:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:15:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:15:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:15:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 14:15:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 14:15:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 14:15:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 14:15:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 14:15:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-21 14:15:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-21 14:15:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-21 14:15:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-21 14:15:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-21 14:15:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-21 14:15:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-21 14:15:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-21 14:15:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-21 14:15:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-21 14:15:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-21 14:15:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-21 14:15:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-21 14:15:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-21 14:15:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-21 14:15:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-21 14:15:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-21 14:15:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-21 14:15:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-21 14:15:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-21 14:15:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-21 14:15:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-21 14:15:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-21 14:15:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-21 14:15:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-21 14:15:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-21 14:15:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-21 14:15:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-21 14:15:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-21 14:15:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-21 14:15:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-21 14:15:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-21 14:15:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-21 14:15:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-21 14:15:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-21 14:15:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:15:59,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-21 14:15:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 45217 backedges. 15327 proven. 1346 refuted. 0 times theorem prover too weak. 28544 trivial. 0 not checked. [2020-08-21 14:16:00,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586029872] [2020-08-21 14:16:00,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:16:00,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 14:16:00,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480149987] [2020-08-21 14:16:00,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 14:16:00,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:16:00,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 14:16:00,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-08-21 14:16:00,043 INFO L87 Difference]: Start difference. First operand 628 states and 728 transitions. Second operand 17 states. [2020-08-21 14:16:00,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:16:00,797 INFO L93 Difference]: Finished difference Result 1033 states and 1215 transitions. [2020-08-21 14:16:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 14:16:00,798 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 863 [2020-08-21 14:16:00,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:16:00,802 INFO L225 Difference]: With dead ends: 1033 [2020-08-21 14:16:00,802 INFO L226 Difference]: Without dead ends: 629 [2020-08-21 14:16:00,804 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 [2020-08-21 14:16:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-21 14:16:00,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-21 14:16:00,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-21 14:16:00,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 726 transitions. [2020-08-21 14:16:00,890 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 726 transitions. Word has length 863 [2020-08-21 14:16:00,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:16:00,891 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 726 transitions. [2020-08-21 14:16:00,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 14:16:00,891 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 726 transitions. [2020-08-21 14:16:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2020-08-21 14:16:00,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:16:00,901 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] [2020-08-21 14:16:00,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-08-21 14:16:00,902 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:16:00,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:16:00,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2034609596, now seen corresponding path program 36 times [2020-08-21 14:16:00,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:16:00,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408920790] [2020-08-21 14:16:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:16:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:16:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:16:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:16:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:16:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:16:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:16:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:16:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:16:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:16:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:16:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:16:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:16:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:16:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:16:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:16:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:16:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:16:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:16:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:16:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:16:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:16:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:16:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:16:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:16:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:16:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:16:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:16:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:16:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:16:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:16:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:16:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:16:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:16:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:16:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:16:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:16:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:16:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:16:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:16:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:16:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:16:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:16:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:16:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:16:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:16:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 14:16:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:16:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:16:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:16:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:16:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 14:16:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 14:16:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:16:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:16:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:16:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:16:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 14:16:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 14:16:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 14:16:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:16:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:16:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:16:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:16:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 14:16:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 14:16:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 14:16:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 14:16:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:16:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:16:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:16:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 14:16:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 14:16:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 14:16:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 14:16:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 14:16:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-21 14:16:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-21 14:16:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-21 14:16:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-21 14:16:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-21 14:16:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-21 14:16:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-21 14:16:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-21 14:16:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-21 14:16:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-21 14:16:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-21 14:16:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-21 14:16:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-21 14:16:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-21 14:16:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-21 14:16:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-21 14:16:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-21 14:16:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-21 14:16:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-21 14:16:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-21 14:16:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-21 14:16:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-21 14:16:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-21 14:16:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-21 14:16:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-21 14:16:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-21 14:16:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-21 14:16:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-21 14:16:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-21 14:16:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-21 14:16:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-21 14:16:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-21 14:16:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-21 14:16:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-21 14:16:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-21 14:16:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-21 14:16:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-21 14:16:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 14226 proven. 3289 refuted. 0 times theorem prover too weak. 28495 trivial. 0 not checked. [2020-08-21 14:16:01,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408920790] [2020-08-21 14:16:01,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:16:01,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 14:16:01,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639380339] [2020-08-21 14:16:01,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 14:16:01,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:16:01,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 14:16:01,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-08-21 14:16:01,940 INFO L87 Difference]: Start difference. First operand 628 states and 726 transitions. Second operand 19 states. [2020-08-21 14:16:03,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:16:03,055 INFO L93 Difference]: Finished difference Result 891 states and 1028 transitions. [2020-08-21 14:16:03,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-21 14:16:03,055 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 870 [2020-08-21 14:16:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:16:03,059 INFO L225 Difference]: With dead ends: 891 [2020-08-21 14:16:03,059 INFO L226 Difference]: Without dead ends: 629 [2020-08-21 14:16:03,061 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 [2020-08-21 14:16:03,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-21 14:16:03,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-21 14:16:03,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-21 14:16:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 725 transitions. [2020-08-21 14:16:03,140 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 725 transitions. Word has length 870 [2020-08-21 14:16:03,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:16:03,141 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 725 transitions. [2020-08-21 14:16:03,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 14:16:03,141 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 725 transitions. [2020-08-21 14:16:03,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2020-08-21 14:16:03,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:16:03,149 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] [2020-08-21 14:16:03,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-08-21 14:16:03,149 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:16:03,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:16:03,150 INFO L82 PathProgramCache]: Analyzing trace with hash -206805743, now seen corresponding path program 37 times [2020-08-21 14:16:03,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:16:03,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606172753] [2020-08-21 14:16:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:16:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:16:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:16:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:16:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:16:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:16:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 14:16:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:16:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:16:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:16:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:16:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 14:16:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:16:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 14:16:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:16:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:16:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:16:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 14:16:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:16:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-21 14:16:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 14:16:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 14:16:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:16:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 14:16:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 14:16:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-21 14:16:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-21 14:16:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:16:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 14:16:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 14:16:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-21 14:16:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:16:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 14:16:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-21 14:16:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:16:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-21 14:16:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-21 14:16:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 14:16:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-21 14:16:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-21 14:16:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-21 14:16:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 14:16:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-21 14:16:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-21 14:16:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-21 14:16:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-21 14:16:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-21 14:16:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-21 14:16:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-21 14:16:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-21 14:16:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-21 14:16:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-21 14:16:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-21 14:16:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-21 14:16:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-21 14:16:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-21 14:16:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-21 14:16:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-21 14:16:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-21 14:16:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-21 14:16:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-21 14:16:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-21 14:16:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-21 14:16:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-21 14:16:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-21 14:16:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-21 14:16:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-21 14:16:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-21 14:16:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-21 14:16:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-21 14:16:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-21 14:16:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-21 14:16:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-21 14:16:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-21 14:16:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-21 14:16:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-21 14:16:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-21 14:16:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-21 14:16:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-21 14:16:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-21 14:16:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-21 14:16:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-21 14:16:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-21 14:16:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-21 14:16:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-21 14:16:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-21 14:16:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-21 14:16:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-21 14:16:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-21 14:16:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-08-21 14:16:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-21 14:16:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-21 14:16:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-21 14:16:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-21 14:16:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-21 14:16:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-21 14:16:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2020-08-21 14:16:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-21 14:16:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-21 14:16:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-21 14:16:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-21 14:16:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-21 14:16:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-21 14:16:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-21 14:16:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-08-21 14:16:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-21 14:16:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-21 14:16:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-21 14:16:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-21 14:16:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-21 14:16:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-21 14:16:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-21 14:16:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-21 14:16:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:03,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2020-08-21 14:16:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:16:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 46810 backedges. 12737 proven. 5535 refuted. 0 times theorem prover too weak. 28538 trivial. 0 not checked. [2020-08-21 14:16:04,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606172753] [2020-08-21 14:16:04,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:16:04,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-21 14:16:04,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126341708] [2020-08-21 14:16:04,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-21 14:16:04,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:16:04,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-21 14:16:04,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-21 14:16:04,522 INFO L87 Difference]: Start difference. First operand 628 states and 725 transitions. Second operand 21 states.